Standard Number: HJ 668-2013(HJ668-2013)
Chinese:水质 总氮的测定 流动注射-盐酸萘乙二胺分光光度法
English:Determination of Total Nitrogen in Water Flow Injection – Naphthylenediamine Hydrochloride Spectrophotometric Method
Effective Date:2014-01-01
Standard Applicability:This standard applies to surface water, groundwater, domestic sewage and industrial wastewater in the determination of total nitrogen.
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