Abstract
The concentrations of arsenic, cadmium, and lead in infusion tea bags of Camellia sinensis (tea), Pimpinella anisum (anise), Matricaria recutita (chamomile), Peumus boldus (boldo), and Cymbopogon citratus (lemongrass) were determined by graphite furnace atomic absorption spectroscopy (GFAAS) for four commercial brands sold in Tacna, Peru, to compare these concentrations with international standards. The moderate level of arsenic obtained for C. sinensis (0.294 mg kg−1) exceeded the Codex Alimentarius standard for three of the four analyzed brands, while the level of arsenic in P. boldus (0.220 mg kg−1) exceeded the same standard and the Mercado Común del Sur (MERCOSUR) parameters for only one brand. The moderate level of cadmium outlined in the Codex Alimentarius and by the World Health Organization (WHO) was exceeded by two infusion tea bag brands of M. recutita (0.210 mg kg−1) and one brand of C. citratus (0.134 mg kg−1). Finally, based on the MERCOSUR parameters, moderate levels of lead were exceeded by only one brand of C. citratus (0.535 mg kg−1). To evaluate possible health risks, we also calculated the hazard index (HI) of the heavy metals in the target herbal tea bags. The values obtained were less than 1, showing negligible noncarcinogenic health risks for consumers. Despite this information and because of the elevated concentrations of arsenic, cadmium, and lead obtained in some of our results, we suggest more detailed studies to obtain more information about the potential toxicity of these products to humans.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10661-022-10232-3/MediaObjects/10661_2022_10232_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10661-022-10232-3/MediaObjects/10661_2022_10232_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10661-022-10232-3/MediaObjects/10661_2022_10232_Fig3_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10661-022-10232-3/MediaObjects/10661_2022_10232_Fig4_HTML.png)
Similar content being viewed by others
Availability of data and material
The data are provided on request.
Code availability
Not applicable.
References
Abualhasan, M. N., Nidal, J., Hawash, M., Khayat, R., Khatatbeh, E., Ehmidan, M., & Al-Atrash, M. (2020). Evaluation of heavy metal and microbial contamination in green tea and herbal tea used for weight loss in the Palestinian market. Evidence-Based Complementary and Alternative Medicine, 2020, 7631562. https://doi.org/10.1155/2020/7631562
Al Mofleh, I. A., Alhaider, A. A., Mossa, J. S., Al-Soohaibani, M. O., & Rafatullah, S. (2007). Aqueous suspension of anise “Pimpinella anisum” protects rats against chemically induced gastric ulcers. World Journal of Gastroenterology, 13(7), 1112–1118. https://doi.org/10.3748/wjg.v13.i7.1112
Aliaga-Paredes, E. L., & Acevedo-Jara, J. A. (2017). Estudio de pre-factibilidad para la instlación de una planta de producción de bolsas filtrantes de manzanilla común (Chamomilla recutita (L.) Raudchert). Bachelor’s thesis. Facultad de Ingeniería y Arquitectura, Universidad de Lima (p. 171). Lima.
Aliaga-Paredes, E. L., & Acevedo-Jara, J. A. (2018). Factores para el procesamiento de la manzanilla común en la industria peruana de infusiones. Ingeniería Industrial, 036, 213–239. https://doi.org/10.26439/ing.ind2018.n036.2455
Arhoghro, E. M., Kpomah, E. D., & Uwakwe, A. A. (2012). Curative potential of aqueous extract of lemon grass (Cymbopogon citratus) on cisplatin - induced hepatotoxicity in albino Wistar rats. Journal of Physiology and Pharmacology Advances, 2(8), 282–294. ISSN:2251–7693.
Asmat, U., Gutiérrez, L., Ramos, L., & Urday, Y. (2017). Plan estratégico de Marketing para el Lanzamiento de Infusiones de Cacao de la empresa la Ibérica. Bachelor’s tesis. Escuela de Posgrado, Pontificia Universidad Católica del Perú (p. 183). Lima.
Ayantobo, O. O., Ayantobo, J. A., Awomeso, J. A., Oluwasanya, G. O., Bada, B. S., & Taiwo, A. W. (2014). Non-cancer human health risk assessment from exposure to heavy metals in surface and groundwater in Igun Ijesha, Southwest Nigeria. American Journal of Environmental Sciences, 10(3), 301-311. https://doi.org/10.3844/ajessp.2014.301.311
Backhouse, N., Delporte, C., Givernau, M., Cassels, B. K., Valenzuela, A., & Speisky, H. (1994). Anti-inflammatory and antipyretic effects of boldine. Agents and Actions, 42(3–4), 114–117. https://doi.org/10.1007/BF01983475
Basila, D., & Yuan, C. S. (2005). Effects of dietary supplements on coagulation and platelet function. Thrombosis Research, 117(1–2), 49–53. https://doi.org/10.1016/j.thromres.2005.04.017
Bassi, P., Kumar, V., Kumar, S., Kaur, S., Gat, Y., & Majid, I. (2019). Importance and prior considerations for development and utilization of tea bags: A critical review. Journal of Food Process Engineering, 2019, e13069. https://doi.org/10.1111/jfpe.13069
Blas, E., & Rojas, A. (2018). Respuesta de dos variedaes de anis (Pimpinella anisum L) a la aplicación de cuatro bioestimulantes bajo condiciones del distrito de Yanahuanca provincia de Daniel Alcides Carrión. Bachelors’ tesis. Facultad de ciencias agropecuarias, Universidad Nacional Daniel Alcides Carrión. Cerro de Pasco, Peru, 110 pp.
Boskabady, M. H., & Ramazani-Assari, M. (2001). Relaxant effect of Pimpinella anisum on isolated guinea pig tracheal chains and its possible mechanism(s). Journal of Ethnopharmacology, 74(1), 83–88. https://doi.org/10.1016/S0378-8741(00)00314-7
Bundschuh, J., Armienta, M. A., Morales-Simfors, N., Alam, M. A., López, D. L., Delgado, Q. V., Dietrich, S., Schneider, J., Tapia, J., Sracek, O., Castillo, E., Marco Parra, L. -M., Altamirano, E. M., Guilherme, L. R. G., Sosa, N. N., Niazi, N. K., Tomaszewska, B., Lizama, A. K., Bieger, K., … & Ahmad, A. (2020). Arsenic in Latin America: New findings on source, mobilization and mobility in human environments in 20 countries based on decadal research 2010–2020. Critical Reviews in Environmental Science and Technology, 51(16), 1727–1865. https://doi.org/10.1080/10643389.2020.1770527
Bundschuh, J., Schneider, J., Alamc, M. A., Niazi, N. K., Herath, I., Parvez, F., Tomaszewska, B., Guimaraes Guilherme, L. R., Maity, J. P., López, D. L., Fernández, C. A., Pérez-Carrera, A., Morales-Simfors, N., Alarcón-Herrera, M. T., Baisch, P., Mohan, D., & Mukherjee, A. (2021). Seven potential sources of arsenic pollution in Latin America and their environmental and health impacts. Science of the Total Environment, 780(2021), 146274. https://doi.org/10.1016/j.desal.2021.115151
Bundschuh, J., Pérez Carrera, A., & Litter, M. I. (2008). Distribución del Arsénico en las Regiones Ibérica e Iberoamericana. CYTED. Argentina, 241 pp.
Castro, M. (2004). Arsénico en el agua de bebida de América Latina y su efecto en la salud pública. HDT-CEPIS, 95, 1–12.
Choi, Y. T., Jung, C. H., Lee, S. R., Bae, J. H., Baek, W. K., Suh, M. H., Park, J., Park, C. W., & Suh, S. I. (2001). The green tea polyphenol (-)-epigallocatechin gallate attenuates beta-amyloid-induced neurotoxicity in cultured hippocampal neurons. Life Sciences, 70(5), 603–614. https://doi.org/10.1016/S0024-3205(01)01438-2
Codex Alimentarius Commission. (1991). Joint FAO/WHO food standards program. Nineteenth Session. Rome, Italy.
Danlami, U., Rebecca, A., Machan, D. B., & Asuquo, T. S. (2011). Comparative study on the antimicrobial activities of the ethanolic extracts of lemon Grass and Polyalthia longifolia. Journal of Applied Pharmaceutical Science, 1(9), 174–176. ISSN:2231–3354.
Euromonitor International. (2017). Tea in Peru-Country Report. Recuperado de Euromonitor Passport database.
Euromonitor International. (2015). Hot drinks in Peru-Industry overview. Recuperado de Euromonitor Passport database.
European Pharmacopoeia. (2008). Strasbourg, council of Europe.
Fano, D., Vásquez-Velásquez, C., Aguilar, J., Gribble, M. O., Wickliffe, J. K., Lichtveld, M. Y., Steenland, K., & Gonzáles, F. G. (2019). Arsenic concentrations in household drinking water: A cross-sectional survey of pregnant women in Tacna, Peru, 2019. Exposure and Health, 12, 555–560. https://doi.org/10.1007/s12403-019-00337-5
Garg, D., Muley, A., Khare, N., & Marar, T. (2012). Comparative analysis of phytochemical profile and antioxidant activity of some Indian culinary herbs. Research Journal of Pharmaceutical, Biological and Chemical Sciences, 3(3), 845–854. ISSN:0975–8585.
Gebeyehu, H. R., & Bayissa, L. D. (2020). Levels of heavy metals in soil and vegetables and associated health risks in Mojo Area. Ethiopia. Plos ONE, 15(1), e0227883. https://doi.org/10.1371/journal.pone.0227883
George, C. M., Sima, L., Arias, M. H. J., Mihalic, J., Cabrera, L. Z., Danz, D., Checkley, W., & Gilman, R. H. (2014). Arsenic exposure in drinking water: An unrecognized health threat in Peru. Bulletin of the World Health Organization, 92, 565–572. https://doi.org/10.2471/BLT.13.128496
Gilligan, N. P. (2005). The palliation of nausea in hospice and palliative care patients with essential oils of Pimpinella anisum (aniseed), Foeniculum vulgare var. dulce (sweet fennel), Anthemis nobilis (Roman chamomile) and Mentha x piperita (peppermint). International Journal of Aromatherapy, 15(4), 163–167. https://doi.org/10.1016/j.ijat.2005.10.012
Gülcin, I., Oktay, M., Kireçci E. & Küfrevioǧlu, Ö. I. (2003). Screening of antioxidant and antimicrobial activities of anise (Pimpinella anisum L.) seed extracts. Food Chemistry, 83(3), 371–382. https://doi.org/10.1016/S0308-8146(03)00098-0
Huamaní, A. (2000). Aguas Termales y Minerales en el norte del Perú. Lima: Instituto Geológico Minero y Metalúrgico del Perú, Boletín Nº 22, Serie D: Estudios Regionales (p. 93). Lima.
Huamaní, A. (2001). Aguas Termales y Minerales en el Suroriente del Perú (Dptos. Apurimac, Cuzco, madre de Dios y Puno). Lima: Instituto Geológico Minero y Metalúrgico del Perú, Boletín Nº 24, Serie D: Estudios Regionales (p. 172). Lima.
Huamaní, A., & Valenzuela, G. (2003). Aguas Termales y Minerales en el oriente central del Perú. Lima: Instituto Geológico Minero y Metalúrgico del Perú, Boletín Nº 25, Serie D: Estudios Regionales (p. 86). Lima.
Huguet, R. (2014). Determinación Cuantitativa de metales pesados en cinco especies vegetales en bolsas filtrantes para infusiones expendidas en Lima Metropolitana-2013. Master’s Thesis. Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos (p. 144). Lima.
Jaishankar, M., Tseten, T., Anbalagan, N., Mathew, B. B., & Beeregowda, K. N. (2016). Toxicity, mechanism and health effects of some heavy metals. Interdisciplinary Toxicology, 7(2), 60–72. https://doi.org/10.2478/intox-2014-0009
**, C. W., Zheng, S. J., He, Y. F., Zhou, G. D., & Zhou, Z. X. (2005). Lead contamination in tea garden soils and factors affecting its bioavailability. Chemosphere, 59(8), 1151–1159. https://doi.org/10.1016/j.chemosphere.2004.11.058
Karimi, M., Tayebi, L., & Sobhanardakani, S. (2016). Pb and Cd in medicinal plants (case study: Shirazi thyme, sweet violet, pennyroyal and jujube). Journal of Kermansha University of Medical Science, 20(3), 111–116.
Levites, Y., Weinreb, O., Maor, G., Youdim, M. B., & Mandel, S. (2001). Green tea polyphenol (-)-epigallocatechin-3-gallate prevents N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced dopaminergic neurodegeneration. Journal of Neurochemistry, 78(5), 1073–1082. https://doi.org/10.1046/j.1471-4159.2001.00490.x
Lima, I. O., Oliveira, R. A. G., Lima, E. O., Farias, N. M. P., & Souza, E. L. (2006). Atividade antifúngica de óleos essenciais sobre espécies de Candida. Revista Brasileira De Farmacognosia, 16(2), 197–201. https://doi.org/10.1590/S0102-695X2006000200011
Luo, L., Wang, B., Jiang, J., Fitzgerald, M., Huang, Q., Yu, Z., Li, H., Zhang, J., Wei, J., Yang, C., Zhang, H., Dong, L., & Chen, D. (2021). Heavy metal contaminations in herbal medicines: determination, comprehensive risk assessments, and solutions. Frontiers in Pharmacology, 11, 595335. https://doi.org/10.3389/fphar.2020.595335
Madueño, F. (2017). Determinación de metales pesados (plomo y cadmio) en lechuga (Lactuca sativa) en mercados del Cono Norte, Centro y Cono Sur de Lima Metropolitana. Bachelor’s tesis. Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos. Lima, Peru, 94 pp.
McClintock, T. R., Chen, Y., Bundschuh, J., Oliver, J. T., Navoni, J., Olmos, V., Villaamil, E., Ahsan, H., & Parvez, F. (2012). Arsenic exposure in Latin America. Biomarkers, risk assessments and related health effects. Science of the Total Environment, 429, 76–91. https://doi.org/10.1016/j.scitotenv.2011.08.051
McKay, D. L., & Blumberg, J. B. (2006). A review of the bioactivity and potential health benefits of chamomile tea (Matricaria recutita L.). Phytotherapy Research, 20(7), 519–530. https://doi.org/10.1002/ptr.1900
Mercado Común del Sur. (2012). Reglamento Técnico MERCOSUR sobre Límites Máximos de Contaminantes Inorgánicos en Alimentos.
Miura, Y., Chiba, T., Miura, S., Tomita, I., Umegaki, K., Ikeda, M., & Tomita, T. (2000). Green tea polyphenols (flavan 3-ols) prevent oxidative modification of low density lipoproteins: An ex vivo study in humans. Journal Nutritional Biochemistry, 11(4), 216–222. https://doi.org/10.1016/S0955-2863(00)00068-1
Morais, S., Garcia e Costa, F., & Pereira, M. (2012). Heavy metals and human health. Environmental Health - Emerging Issues and Practice. Portugal. 324 pp.
Nahidi, F., Taherpour, M., Mojab, F., & Majd, H. (2008). Effect of anise extract on hot flush menopause. Pajoohandeh, 13(3), 167–173.
Natesan, S., & Ranganathan, V. (1990). Content of various elements in different parts of the tea plant and in infusions of black tea from southern India. Journal of Food Science and Agriculture, 51(1), 125–139. https://doi.org/10.1002/jsfa.2740510112
Negishi, H., Xu, J. W., Ikeda, K., Njelekela, M., Nara, Y., & Yamori, Y. (2004). Black and green tea polyphenols attenuate blood pressure increases in stroke-prone spontaneously hypertensive rats. Journal Nutrition, 134(1), 38–42. https://doi.org/10.1093/jn/134.1.38
Nejatolahi, M., Mortazavi, S., & Ildoromi, A. (2014). Levels of Cu, Zn, Pb, and Cd in the leaves of the tea plant (Camellia sinensis) and in the soil of Gilan and Mazandaran farms of Iran. Journal of Food Measurement and Characterization, 8(4), 277–282. https://doi.org/10.1007/s11694-014-9186-3
Picon, P. D., Picon, R. V., Costa, A. F., Sander, G. B., Amaral, K. M., Aboy, A. L., & Henriques, A. T. (2010). Randomized clinical trial of a phytotherapic compound containing Pimpinella anisum, Foeniculum vulgare, Sambucus nigra, and Cassia augustifolia for chronic constipation. BMC Complementary and Alternative Medicine, 10(17), 1–9. https://doi.org/10.1186/1472-6882-10-17
Presidencia del Consejo de Ministros del Perú - PCM. (2013). Perfil comercial de las plantas aromáticas y medicinales. Sierra Exportadora. Lima, Perú, 37 pp.
Pumayauli, G. J. (2017). Estudio comparativo de metales Arsénico, Manganeso y Plomo de Bolsas filtrantes de té verde y té negro comercializados en mercados y supermercados de Lima Metropolitana, 2017. Bachelor’s thesis. Facultad de Ciencias Farmacéuticas y Bioquímica, Universidad Inca Garcilaso de la Vega. Lima, Perú, 107 pp.
Quezada, N., Ascencio, M., del Valle, J. M., & Gómez, B. (2004). Antioxidant activity of crude extract, alkaloid fraction and flavonoid fraction from Boldo (Peumus boldus Molina) leaves. Journal of Food Science, 69(5), 371–376. https://doi.org/10.1111/j.1365-2621.2004.tb10700.x
Radwan, M. A., & Salama, A. K. (2006). Market basket survey for some heavy metals in Egyptian fruits and vegetables. Food and Chemical Toxicology, 44(8), 1273–1278. https://doi.org/10.1016/j.fct.2006.02.004
Rajeshwari, U., Shobha, I., & Andallu, B. (2011). Comparison of aniseeds and coriander seeds for antidiabetic, hypolipidemic and antioxidant activities. Spatula DD - Peer Reviewed Journal on Complementary Medicine and Drug Discovery, 1(1), 9–16. https://doi.org/10.5455/espátula.20110106123144
Reiniger, I. W., de Oliveira, J. F., Caldeira-de-Araújo, A., & Bernardo-Filho, M. (1999). Effect of Peumus boldus on the labeling of red blood cells and plasma proteins with Technetium-99m. Applied Radiation and Isotopes, 51(2), 145–149. https://doi.org/10.1016/S0969-8043(98)00200-0
RUNAQ. (2017). El té en el Perú. Available at: http://runaq.com.pe/el-te-en-el-peru/?v=3827b7f36786
Shekoohiyan, S., Ghoochani, M., Mohagheghian, A., Mahvi, A. H., Yunesian, M., & Nazmara, S. (2012). Determination of lead, cadmium and arsenic in infusion tea cultivated in north of Iran. Iranian Journal of Environmental Health Science & Engineering, 9(1), 37. https://doi.org/10.1186/1735-2746-9-37
Shi, Y., Ruan, J., Ma, L., Han, W., & Wang, F. (2008). Accumulation and distribution of arsenic and cadmium by tea plants. Journal of Zhejiang University. Science, 9(3), 265–270. https://doi.org/10.1631/jzus.B0710631
Silva, C., Guterres, S. S., Weisheimer, V., & Schapoval, E. E. (2008). Antifungal activity of the lemon grass oil and citral against Candida spp. The Brazilian Journal of Infectious Diseases, 12(1), 63–66. https://doi.org/10.1590/S1413-86702008000100014
SSA. (1994). Norma Oficial Mexicana NOM–117–SSA1–1994. Bienes y servicios. Método de prueba para la determinación de cadmio, arsénico, plomo, estaño, cobre, fierro, zinc y mercurio en alimentos, agua potable y agua purificada por espectrometría de absorción atómica. Secretaría de Salud. Diario Oficial de la Federación. 16 de agosto de 1995.
Susaeta, E. (2012). Atlas ilustrado de las infusiones. Madrid, Spain.
Steinmüller, K., & Zavala, B. (1997). Hidrotermalismo en el sur del Perú. Lima: Instituto Geológico Minero y Metalúrgico del Perú, Boletín Nº 18, Serie D: Estudios Regionales (p. 106). Lima.
Steinmüller, K., & Nuñez, S. (1998). Hidrotermalismo en el sur del Perú (Sector Cailloma - Puquio). Lima: Instituto Geológico Minero y Metalúrgico del Perú, Boletín Nº 19, Serie D: Estudios Regionales (p. 106). Lima.
Steinmüller, K., & Huamani A. (1998). Aguas Termales y Minerales en el centro del Perú. Lima: Instituto Geológico Minero y Metalúrgico del Perú, Boletín Nº 21, Serie D: Estudios Regionales, Lima, Peru, 762 pp.
Tangpu, V., & Yadav, A. K. (2006). Antidiarrhoeal activity of Cymbopogon citratus and its main constituent, citral. Pharmacologyonline, 2, 290–298. ISSN:1827–8620.
Tas, A., Özbek, H., Atasoy, N., Altug, M. E., & Ceylan, E. (2006). Evaluation of analgesic and anti-inflammatory activity of Pimpinella anisum fixed oil extract. The Indian Veterinary Journal, 83(8), 840–843.
Tchoumbougnang, F., Zollo, P. H., Dagne, E., & Mekonnen, Y. (2005). In vivo antimalarial activity of essential oils from Cymbopogon citratus and Ocimum gratissimum on mice infected with Plasmodium berghei. Planta Medica, 71(1), 20–23. https://doi.org/10.1055/s-2005-837745
Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K., & Sutton, D. J. (2012). Heavy metal toxicity and the environment. Molecular, Clinical and Environmental Toxicology, Experientia Supplementum, 101, 133–164. https://doi.org/10.1007/978-3-7643-8340-4_6
Vila, R., Valenzuela, L., Bello, H., Cañigueral, S., Montes, M., & Adzet, T. (1999). Composition and antimicrobial activity of the essential oil of Peumus boldus leaves. Planta Medica, 65(2), 178–179. https://doi.org/10.1055/s-2006-960461
Wiseman, S. A., Balentine, D. A., & Frei, B. (1997). Antioxidants in tea. Critical Reviews in Food Science and Nutrition, 37(8), 705–718. https://doi.org/10.1080/10408399709527798
World Health Organization. (1998). Quality control methods for medicinal plants materials (p. 122). World Health Organization.
Youn, Y. C., Kwon, O. S., Han, E. S., Song, J. H., Shin, Y. K., & Lee, C. S. (2002). Protective effect of boldine on dopamine-induced membrane permeability transition in brain mitochondria and viability loss in PC12 cells. Biochemical Pharmacology, 63(3), 495–505. https://doi.org/10.1016/S0006-2952(01)00852-8
Zárate-Quiñones, R., Custodio, M., Orellana-Mendoza, E., Cuadrado-Campó, W., Grijalva-Aroni, P., & Peñaloza, R. (2021). Determination of toxic metals in commonly consumed medicinal plants largely used in Peru by ICP-MS and their impact on human health. Chemical Data Collections, 22(2021), 100711. https://doi.org/10.1016/j.cdc.2021.100711
Zielinski, A. A. F., Haminiuk, C. W. I., Alberti, A., Nogueira, A., Demiate, I. M., & Granato, D. (2014). A comparative study of the phenolic compounds and the in vitro antioxidant activity of different Brazilian teas using multivariate statistical techniques. Food Research International, 60, 246–254. https://doi.org/10.1016/j.foodres.2013.09.010
Zhang, M., & Fang, L. (2007). Tea plantation-induced activation of soil heavy metals. Communication in Soil Science and Plant Analysis, 38(11–12), 1467–1478. https://doi.org/10.1080/00103620701378417
Acknowledgements
We want to thank Gandhy Portugal and Giüseppy Calizaya for their support and review of the manuscript, and Jorge Ruíz for his invaluable suggestions at statistical level.
Funding
This work was supported by funds from mining canons and royalties assigned to the Universidad Nacional Jorge Basadre Grohmann authorized and approved by Resolución Rectoral N°4644–2018-UN/JBG.
Author information
Authors and Affiliations
Contributions
Óscar Begazo Portugal: designed the research, compiled and analyzed the data, and wrote and critically revised the manuscript. Marisel Flores-Quispe: participated in the compilation and analysis of the data and wrote and critically revised the manuscript.
Corresponding author
Ethics declarations
Ethics approval
Not applicable.
Consent to participate
Not applicable.
Consent for publication
Not applicable.
Competing interests
The authors declare no competing interests.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Portugal, Ó.B., Flores-Quispe, M. Concentrations of arsenic, cadmium, and lead in herbal infusion tea bags marketed in Tacna, Peru. Environ Monit Assess 194, 534 (2022). https://doi.org/10.1007/s10661-022-10232-3
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s10661-022-10232-3