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Alkaline potassium persulfate digestion ultraviolet spectrophotometric method for the determination of total nitrogen in water, in

Alkaline potassium persulfate digestion ultraviolet spectrophotometric method for the determination of total nitrogen in water, in, Total:3 items.

In the international standard classification, Alkaline potassium persulfate digestion ultraviolet spectrophotometric method for the determination of total nitrogen in water, in involves: Water quality, Vocabularies.

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China, Alkaline potassium persulfate digestion ultraviolet spectrophotometric method for the determination of total nitrogen in water, in

GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method

Professional Standard - Environmental Protection, Alkaline potassium persulfate digestion ultraviolet spectrophotometric method for the determination of total nitrogen in water, in

HJ 636-2012 Water quality.Determination of total nitrogen.Alkaline potassium persulfate digestion UV spectrophotometric method

中华人民共和国环境保护部, Alkaline potassium persulfate digestion ultraviolet spectrophotometric method for the determination of total nitrogen in water, in

GB 11894-1989 Water quality-Determination of total nitrogen-Alkaline potassium persulfate digestion-UV spectrophotometric method