Comparative extraction efficiency of the pre-packed Bakerbond-spe-SDB-1 resin and of Amberlite-AD2 (XAD-2) resin, for the preparation of urine extracts in biomonitoring studies. Urine extracts were prepared in parallel with the Bakerbond column and with the classical XAD-2 resin from urines (1) spiked with mutagenic chemicals, (2) collected from patients after chemotherapy, and (3) from smokers. Mutagenic activities were evaluated on Salmonella typhimurium tester strains TA97a, TA98, TA100 and TA102 with and without S9 mix. Mutagenic activities obtained with Bakerbond extracts were almost always higher or at least equivalent to those prepared on XAD-2 resin. Similar results were observed for the three urine sample groups. When fully validated, the use of the pre-packed columns will be more convenient and time-saving for large population studies.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s1383-5718(02)00172-9 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A novel approach to the extraction and analysis of dioxins and furans sampled onto Amberlite XAD-2 sorbent.
Anal Methods
December 2024
Department of Chemistry, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa.
Article Synopsis
- Strong emission control plans have successfully reduced pollutants, yet PCDDs and PCDFs are still emitted from sources like waste incinerators, necessitating effective monitoring due to their high toxicity.
- Current analysis of these compounds in Africa is costly and limited, often done overseas, leading to fewer measurements and less data.
- A new, cost-effective laboratory method for analyzing PCDD/Fs was developed, significantly simplifying extraction and clean-up processes, achieving comparable recovery rates to established methods while being faster and more efficient.
Personal air sampling for pesticides in the California San Joaquin Valley.
J Expo Sci Environ Epidemiol
September 2024
Department of Civil and Environmental Engineering, University of California at Davis, Davis, CA, USA.
Background: California is a leading agricultural state and with that, has significant applications of pesticides. Levels of exposure have been measured to be higher among residents in agricultural areas, but measures of personal inhalation exposure to a wide range of pesticides are lacking. Community members in the San Joaquin Valley have expressed concern over pesticide exposures.
View Article and Find Full Text PDFQuercetin as the primary xanthine oxidase inhibitor compound in leaf.
Nat Prod Res
July 2024
Department of Food Science and Technology, College of Agriculture and Life Sciences, Jeonbuk National University, Jeonju, South Korea.
(MT) leaf demonstrated various health benefits, notably the inhibition of xanthine oxidase (XOD) activity, which is crucial in the management of hyperuricaemia and many diseases related to oxidative stress. This study aimed to identify the primary compound responsible for this inhibitory effect. Through a systematic investigation, MT leaf extracts were subjected to solvent-solvent partitioning using ethyl acetate, -hexane, -butanol, and dichloromethane.
View Article and Find Full Text PDFUrban air PCDD/Fs: Dry deposition fluxes and mass transfer coefficients determined using a water surface sampler.
Chemosphere
September 2024
Department of Environmental Engineering, Faculty of Engineering, Bursa Uludag University, 16059, Nilufer/Bursa, Turkey. Electronic address:
Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) cause significant environmental concerns. Atmospheric PCDD/Fs permeate water bodies and other ecosystems through wet and dry deposition. In an urban site, dry deposition flux samples of gaseous phase PCDD/Fs were collected by a water surface sampler (WSS) operated between June 2022 and June 2023.
View Article and Find Full Text PDFDevelopment of an analytical method for the determination of more than 300 pesticides and metabolites in the particulate and gaseous phase of ambient air.
Anal Bioanal Chem
May 2024
Helmholtz-Zentrum Hereon, Institute for Coastal Environmental Chemistry, Organic Environmental Chemistry, Max-Planck-Str. 1, 21502, Geesthacht, Germany.
Pesticides can enter the atmosphere during spraying or after application, resulting in environmental or human exposure. The study describes the optimisation and validation of analytical methods for the determination of more than 300 pesticides in the particulate and gaseous phases of the air. Pesticides were sampled with high-volume air samplers on glass-fibre filters (GFFs) and glass columns filled with polyurethane foam (PUF) and XAD-2 resin.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!