Fruits, vegetables and derived products — Determination of arsenic content — Silver diethyldithiocarbamate spectrophotometric method
NORMA vydána dne 1.12.1982
Označení normy: ISO 6634:1982
Datum vydání normy: 1.12.1982
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: The method consists in decomposing a test portion, reducing arsenic (V) to arsenic (III) with tin(II) chloride and transforming the arsenic into arsine by action of nascent hydrogen, forming a red coloured complex by the action of the arsine on silver diethyldithiocarbamate and measuring at a wavelength of 520 nm.