ISO 4876:1980
Tobacco and tobacco products — Determination of maleic hydrazide residues
Tobacco and tobacco products — Determination of maleic hydrazide residues
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 8
- Дата публикации:
- 1 апреля 1980 г.
- Издание:
- ISO IS 4876 edition 1 version 1
- ICS:
- 65.160
This method is also applicable to the residues from maleic hydrazide sucker control agents used on tobacco crops. Annex A describes optional extra procedure such as acid pre-digestion and carbon clean-up, and Annex B includes some notes on the distillation procedure.
Abstract
Overview
ISO 4876:1980 specifies a standardized analytical method for the determination of maleic hydrazide residues in tobacco and tobacco products. The method is based on reduction of maleic hydrazide to hydrazine by nascent hydrogen (granulated zinc), steam distillation of the liberated hydrazine and spectrophotometric measurement of the yellow complex formed with . The standard also covers residues from maleic hydrazide sucker-control agents used on tobacco crops and provides optional clean-up procedures in Annex A and distillation notes in Annex B.
Похожие стандарты
Упомянутые в описании и другие стандарты ISO