ISO 2590:1973 PDF
General method for the determination of arsenic — Silver diethyldithiocarbamate photometric method
Название (английский):
ISO 2590:1973
General method for the determination of arsenic — Silver diethyldithiocarbamate photometric method
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 7
- Дата публикации:
- 1 мая 1973 г.
- Издание:
- ISO IS 2590 edition 1 version 1
- ICS:
- 71.040.40
Описание (английский):
Applicable to determining the quantities contained either in all the test solution or in the aliquot portion of between 1 g and 20 g that is taken for the determination. The principle bases on the reduction of the arsenic by zinc in a hydrochloric acid medium with the formation of arsine; absorption of the arsine in a solution of silver diethyldithiocarbamate in pyridine. Photometric measurement of the purplish-red colour produced by the colloidally dispersed silver at the maximum of the absorption curve at a wavelength of about 540 nm.
Технические детали
- Технический комитет
- ISO/TC 47 - Chemistry
- SKU
- ISO 2590:1973