Method 8276 Toxaphene and Toxaphene Congeners by Gas Chromatography / Negative Ion Mass Spectrometry
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چکیده
In addition, SW-846 methods, with the exception of required method use for the analysis of method-defined parameters, are intended to be methods which contain general information on how to perform an analytical procedure or technique, which a laboratory can use as a basic starting point for generating its own detailed Standard Operating Procedure (SOP), either for its own general use or for a specific project application. The performance data included in this method are for guidance purposes only, and are not intended to be and must not be used as absolute quality control (QC) acceptance criteria for purposes of laboratory accreditation.
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The effect of co-occurring polychlorinated biphenyls on quantitation of toxaphene in fish tissue samples by gas chromatography negative ion mass spectrometry.
Determinative methods based on gas chromatography-negative chemical ionization mass spectrometry (GC-NCI/MS) provide improved sensitivity and specificity for toxaphene in environmental samples, but are subject to misidentification due to oxygen reaction in the presence of polychlorinated biphenyls (PCBs). The goal of this study was to quantify the impact of co-occurring PCBs in fish tissue samp...
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Polybrominated diphenyl ether (PBDE) congeners and components of the complex mixture toxaphene are stable in the environment and readily bioaccumulated into wildlife and human tissues. PBDEs are presently used in large quantities worldwide as flame retardants in textiles, furniture, computer equipment, and cables. Toxaphene is a complex mixture of chlorinated bornanes and bornenes that was the ...
متن کاملGas Chromatography Mass Spectrometry Analytical Methodology Development for Toxaphene by High Resolution Gas Chromatography / High Resolution Mass Spectrometry with Electron Capture Negative Ionization
ORGANOHALOGEN COMPOUNDS – Volume 66 (2004) 217 Introduction Toxaphene is a broad-spectrum insecticide, was one of the most heavily used agricultural chemicals on a global scale, especially against pests in cotton field and vegetable farms. Basically, commercial production of toxaphene involves the reaction of camphene, chlorine activated by ultraviolet radiation and certain catalysts to yield c...
متن کاملEnvironmental occurrence, analysis, and toxicology of toxaphene compounds.
Toxaphene production, in quantities similar to those of polychlorinated biphenyls, has resulted in high toxaphene levels in fish from the Great Lakes and in Arctic marine mammals (up to 10 and 16 microg g-1 lipid). Because of the large variabiliity in total toxaphene data, few reliable conclusions can be drawn about trends or geographic differences in toxaphene concentrations. New developments ...
متن کاملToxaphene - recent developments in analysis and biomonitoring
Recent developments in the analysis of toxaphene now enable a congener-specific analysis of toxaphene. However, the comparability of laboratory results still needs considerable improvement. Because of the complexity of the chromatograms multidimensional gas chromatographic techniques are recommended for a congener-specific determination of toxaphene congeners. Mass spectrometry with electron ca...
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