DIN EN 16318 Fertilizers - Determination of trace elements - Determination of chromium (VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)
Данный раздел/документ содержится в продуктах:
- Техэксперт: Машиностроительный комплекс
- Картотека зарубежных и международных стандартов
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- Картотека зарубежных и международных стандартов
Deutsches Institut fur Normung e. V.
Fertilizers - Determination of trace elements - Determination of chromium (VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)
N EN 16318
Annotation
This European Standard specifies two methods for the determination of the content of soluble chromate in fertilizers.
Method A specifies the determination of chromate after extraction with water by photometry. This method can be used to determine Cr(VI)-mass fractions in solids higher than 1 mg/kg.
Method B specifies the determination of chromate by alkaline digestion and ion chromatography with spectrophotometric detection. This method can be used to determine Cr(VI)-mass fractions in solids higher than 0,1 mg/kg.
NOTE In case of reducing or oxidizing fertilizer matrix, no valid Cr(VI) content can be reported.
Автоматический перевод:
Удобрения - Определение микроэлементов - Определение хрома (VI) фотометрией (метод A) и хроматографией иона со спектрофотометрическим обнаружением (метод B)
Этот европейский стандарт определяет два метода для определения содержания разрешимого хромата в удобрениях.
Метод A определяет определение хромата после извлечения с водой фотометрией. Этот метод может использоваться для определения Cr(VI) - массовые части в твердых телах выше, чем 1 мг/кг.
