Standard No.:	HJ 634-2012
English Name:	Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution -spectrophotometric methods
Chinese Name:	土壤 氨氮、亚硝酸盐氮、硝酸盐氮的测定 氯化钾溶液提取-分光光度法
Professional Classification:	HJ    Professional Standard - Environment
Source Content Issued by:	ZHB
Issued on:	2012-2-29
Implemented on:	2012-6-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	8000 words
Translation Price(USD):	240.0
Delivery:	via email in 1~3 business day

本标准规定了测定土壤中氨氮、亚硝酸盐氮、硝酸盐氮的氯化钾溶液提取－分光光度法。
本标准适用于土壤中氨氮、亚硝酸盐氮、硝酸盐氮的测定。
当样品量为40.0 g 时，本方法测定土壤中氨氮、亚硝酸盐氮、硝酸盐氮的检出限分别为0.10 mg/kg、0.15 mg/kg、0.25 mg/kg，测定下限分别0.40 mg/kg、0.60 mg/kg、1.00 mg/kg。