| Autor: |
J W, Miles, D L, Mount, T J, Beckmann, S K, Carrigan, I M, Galoux, P, Hitos, M C, Hodge, K, Kissler, A, Martijn, F, Sanchez-Rasero |
| Rok vydání: |
1984 |
| Předmět: |
|
| Zdroj: |
Journal - Association of Official Analytical Chemists. 67(4) |
| ISSN: |
0004-5756 |
| Popis: |
Although the gas chromatographic separation of the isomers of BHC was demonstrated two decades ago, the present AOAC method of analysis of BHC for gamma-isomer (lindane) content is based on a separation carried out on a liquid chromatographic partition column. A method of analysis has been developed that uses an OV-210 column for separation of the gamma-isomer from the other isomers and impurities in technical BHC. Di-n-propyl phthalate was chosen as an internal standard. The same system allows quantitation of lindane in lotion and shampoo after these products are extracted with ethyl acetate-isooctane (1 + 4). The analytical methods were subjected to a collaborative trial with 10 laboratories. The coefficient of variation for technical BHC was 2.83%. For the water-dispersible powder and emulsifiable concentrate, the coefficients of variation were 2.89% and 4.62%, respectively. Coefficients of variation for 1% lindane lotion and shampoo were 4.36% and 11.92%, respectively. The method has been adopted official first action. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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