Interlaboratory Comparison for the Determination of Five Residual Organochlorine Pesticides in Ginseng Root Samples by Gas Chromatography

An interlaboratory comparison study for the determination of 5 residual organochlorine pesticides (hexachlorobenzene and 4 hexachlorocyclohexane isomers) in ginseng root was performed. This program [Asia Pacific Laboratory Accreditation Cooperation (APLAC) T049] was the first of its kind for an herb...

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Veröffentlicht in:Journal of AOAC International 2007-07, Vol.90 (4), p.1133-1141
Hauptverfasser: Kong, M.F, Chan, S, Wong, Y.C, Wong, S.K, Sin, D.W.M
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container_title Journal of AOAC International
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creator Kong, M.F
Chan, S
Wong, Y.C
Wong, S.K
Sin, D.W.M
description An interlaboratory comparison study for the determination of 5 residual organochlorine pesticides (hexachlorobenzene and 4 hexachlorocyclohexane isomers) in ginseng root was performed. This program [Asia Pacific Laboratory Accreditation Cooperation (APLAC) T049] was the first of its kind for an herbal matrix and involved the participation of 70 laboratories from 26 countries worldwide. Consensus mean values were computed statistically from the reported results, which were eventually used to assess the performance of individual laboratories in terms of the z-scores. The distribution of analytical data was found to be widespread, with standard deviation ranging from 43.9 to 55.9%, and the result patterns obtained were similar to those residue pesticide programs using other matrixes. Although the estimation of measurement uncertainty is a crucial requirement for all quantitative tests for laboratories that meet the requirements of International Organization for Standardization/International Electrotechnical Commisssion (ISO/IEC) 17025, some laboratories in this program had difficulties and showed unfamiliarity with respect to that quality criterion. It was recommended that laboratories review and rectify the situation promptly so that they would have a better understanding of measurement uncertainty or the test service provided.
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This program [Asia Pacific Laboratory Accreditation Cooperation (APLAC) T049] was the first of its kind for an herbal matrix and involved the participation of 70 laboratories from 26 countries worldwide. Consensus mean values were computed statistically from the reported results, which were eventually used to assess the performance of individual laboratories in terms of the z-scores. The distribution of analytical data was found to be widespread, with standard deviation ranging from 43.9 to 55.9%, and the result patterns obtained were similar to those residue pesticide programs using other matrixes. Although the estimation of measurement uncertainty is a crucial requirement for all quantitative tests for laboratories that meet the requirements of International Organization for Standardization/International Electrotechnical Commisssion (ISO/IEC) 17025, some laboratories in this program had difficulties and showed unfamiliarity with respect to that quality criterion. 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Psychology ; fungicide residues ; Gas chromatography ; General pharmacology ; HCH (pesticide) ; herbs ; hexachlorobenzene ; Hydrocarbons, Chlorinated - chemistry ; Identification and classification ; laboratory techniques ; Medical sciences ; Methods ; Organochlorine compounds ; Panax - metabolism ; Panax ginseng ; pesticide residues ; Pesticide Residues - analysis ; Pesticides ; Pesticides - analysis ; Pharmacognosy. Homeopathy. Health food ; Pharmacology. 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Psychology</subject><subject>fungicide residues</subject><subject>Gas chromatography</subject><subject>General pharmacology</subject><subject>HCH (pesticide)</subject><subject>herbs</subject><subject>hexachlorobenzene</subject><subject>Hydrocarbons, Chlorinated - chemistry</subject><subject>Identification and classification</subject><subject>laboratory techniques</subject><subject>Medical sciences</subject><subject>Methods</subject><subject>Organochlorine compounds</subject><subject>Panax - metabolism</subject><subject>Panax ginseng</subject><subject>pesticide residues</subject><subject>Pesticide Residues - analysis</subject><subject>Pesticides</subject><subject>Pesticides - analysis</subject><subject>Pharmacognosy. Homeopathy. Health food</subject><subject>Pharmacology. 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identifier ISSN: 1060-3271
ispartof Journal of AOAC International, 2007-07, Vol.90 (4), p.1133-1141
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source MEDLINE; Oxford University Press Journals All Titles (1996-Current)
subjects Biological and medical sciences
capillary gas chromatography
Chemical properties
Chlorine - analysis
Chromatography, Gas - methods
Clinical Laboratory Techniques
Electrochemistry - methods
Food Analysis - methods
Food Contamination
Food industries
Fundamental and applied biological sciences. Psychology
fungicide residues
Gas chromatography
General pharmacology
HCH (pesticide)
herbs
hexachlorobenzene
Hydrocarbons, Chlorinated - chemistry
Identification and classification
laboratory techniques
Medical sciences
Methods
Organochlorine compounds
Panax - metabolism
Panax ginseng
pesticide residues
Pesticide Residues - analysis
Pesticides
Pesticides - analysis
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plant Roots - metabolism
Quality Control
Reproducibility of Results
roots
title Interlaboratory Comparison for the Determination of Five Residual Organochlorine Pesticides in Ginseng Root Samples by Gas Chromatography
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