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Article
A nationwide survey of 20 legacy brominated flame retardants in indoor dust from China: continuing occurrence, national distribution, and implication for human exposure
Despite the restrictions on polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecanes (HBCDDs), these chemicals are still ubiquitous environmental pollutants. In this study, we measured the concentrat...
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Article
Occurrence and distribution of micro- and mesoplastics in the high-latitude nature reserve, northern China
Microplastics pollution has received growing attention worldwide in recent years. However, data on microplastics in the freshwater environment are still limited, especially in high-latitude nature reserves in ...
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Article
Estimation of metal elements content in soil using x-ray fluorescence based on multilayer perceptron
X-ray fluorescence (XRF) is widely used to rapidly detect heavy metals in soil. Spectra processing has been an important research topic to improve accuracy. In this study, 80 soil samples were analyzed by XRF ...
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Article
Occurrence of dioxin-like POPs in soils from urban green space in a metropolis, North China: implication to human exposure
Urban green space is a special space for urban life and natural contact and has an important impact on human health. However, little information is available on dioxin-like persistent organic pollutants (POPs)...
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Article
An aptamer affinity column for purification and enrichment of aflatoxin B1 and aflatoxin B2 in agro-products
We have developed an aptamer affinity column (AAC) for the purification and enrichment of trace aflatoxin B1 (AFB1) and aflatoxin B2 (AFB2) in genuine agro-products through the covalent conjugation of amino modif...
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Article
Affinity capture of aflatoxin B1 and B2 by aptamer-functionalized magnetic agarose microspheres prior to their determination by HPLC
A novel adsorbent is described for magnetic solid-phase extraction (MSPE) of the aflatoxins AFB1 and AFB2 (AFBs). Magnetic agarose microspheres (MAMs) were functionalized with an aptamer to bind the AFBs which th...
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Article
An oligosorbent-based aptamer affinity column for selective extraction of aflatoxin B2 prior to HPLC with fluorometric detection
The article describes an aptamer affinity column for selective solid-phase extraction of aflatoxin B2 (AFB2). Amino-modified aptamer against AFB2 was immobilized on CNBr-activated Sepharose through a covalent bon...
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Article
Visual and microplate detection of aflatoxin B2 based on NaCl-induced aggregation of aptamer-modified gold nanoparticles
We describe a fast and sensitive method for the detection of aflatoxin B2 (AFB2) that is based on the addition of AFB2-sensitive aptamers to a colloidal solution of gold nanoparticles (AuNPs). Subsequent addit...
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Article
Analysis of hydroxylated polybrominated diphenyl ethers in plant samples using ultra performance liquid chromatography-mass spectrometry
A method was developed for the analysis of hydroxylated brominated diphenyl ethers (OH-PBDEs) in plant samples using an ultra performance liquid chromatography-triple quadrupole mass spectrometer (UPLC-ESI-MS/...
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Chapter and Conference Paper
Molecular Methods of Studying Microbial Diversity in Soil Environments
Microorganisms live in all parts of the biosphere and are critical to nutrient recycling in ecosystems. In recent years, the development of methodologies for the analysis of microorganisms and microbial ecolog...
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Chapter and Conference Paper
Application of Fuzzy Clustering Analysis in Classification of Soil in Qinghai and Heilongjiang of China
Soil classification systems organize soil variability into useful grou**s that can be identified by field investigation and documented in soil survey, and form the basis for the exchange and extension of soi...
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Chapter and Conference Paper
Determination of Cr, Zn, As and Pb in Soil by X-Ray Fluorescence Spectrometry Based on a Partial Least Square Regression Model
Soil samples were collected from five provinces over China, including Bei**g, **njiang, Heilongjiang, Yunnan, and Jiangsu. Heavy metal Cr, Zn, Pb and As in soils were analyzed by a portable X-ray fluorescence...
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Article
Effects of Low Molecular Weight Organic Anions on the Release of Arsenite and Arsenate from a Contaminated Soil
Low-molecular-weight-organic-anions (LMWOAs) are important exudates of plants and may influence the mobility and bioavailability of metals or metalloids. In the present study the effects of selected LMWOAs, ci...
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Article
Preconcentration and Determination of Trace Metals in Seawater Using a Thiol Cotton Fiber Minicolumn Coupled with Inductively Coupled Plasma Mass Spectrometry
A rapid separation and preconcentration method was developed for the determination of trace metals Cu, Zn, Cd, and Pb in seawater using a minicolumn packed with thiol cotton fiber (TCF) coupled with inductivel...
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Article
Microwave extraction of heavy metals from wet rhizosphere soils and its application to evaluation of bioavailability
Single microwave extraction of heavy metals Cr, Ni, Zn, Cu, Cd, and Pb by the extractants CaCl2, EDTA, CH3COOH and HCl has been established. The experimental conditions were optimized. A microwave power of 60% a...
