ISO 6635-1984 水果、蔬菜及其制品 亚硝酸盐和硝酸盐含量的测定 分子吸收光谱法
百检网 2021-08-04
标准号:ISO 6635-1984
中文标准名称:水果、蔬菜及其制品 亚硝酸盐和硝酸盐含量的测定 分子吸收光谱法
英文标准名称:Fruits, vegetables and derived products; Determination of nitrite and nitrate content; Molecular absorption spectrometric method
标准类型:B30;X04
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:B30;X04
国际标准分类号:67.080.01
适用范围:The method consists in extracting a test portion with hot water, precipitating the protein by addition of solutions of potassium hexacyanoferrate(II) and zinc acetate, and filtrating the precipitate. Further, reduction of the nitrate to nitrite by metallic cadmium (only for determining the nitrate). Then addition of sulfanilamide chloride and N-(1-naphtyl)ethylenediamine and measurement of the red complex obtained at a wavelength of 538 nm.
百检能给您带来哪些改变?
1、检测行业全覆盖,满足不同的检测;
2、实验室全覆盖,就近分配本地化检测;
3、工程师一对一服务,让检测更精准;
4、免费初检,初检不收取检测费用;
5、自助下单 快递免费上门取样;
6、周期短,费用低,服务周到;
7、拥有CMA、CNAS、CAL等权威资质;
8、检测报告权威有效、中国通用;