水质 硝酸盐氮的测定 紫外分光光度法(试行)
Water quality-Determination of nitrate-nitrogen-Ultraviolet spectrophotometry
2007-03-10
SL 84-1994
硝酸盐氮的测定(紫外分光光度法)
Determination of nitrogen (nitrate) (Uitraviolet spectrophometric method)
1995-05-01
GB/T 7493-1987
水质 亚硝酸盐氮的测定 分光光度法
Water quality--Determination of nitrogen(nitrite)--Spectrophotometric method
1987-03-06
GB/T 7480-1987
水质 硝酸盐氮的测定 酚二磺酸分光光度法
Water quality--Determination of nitrate--Spectrophotometric method with phenol disulfonic acid
1987-03-06
HJ 634-2012
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
Soil-Determination of ammonium,nitrite and nitrate by extraction with potassium chloride solution-spectrophotometric methods
2012-02-29
HJ 970-2018
水质 石油类的测定 紫外分光光度法(试行)
2018-10-10
DZ/T 0064.59-2021
地下水质分析方法 第59部分:硝酸盐的测定 紫外分光光度法
Methods for analysis of groundwater quality—Part 59:Determination of nitrate—Ultraviolet spectrophotometry
2021-02-22
HJ T342-2007
水质 硫酸盐的测定 铬酸钡分光光度法(试行)
2007-03-10
HJ/T 342-2007
水质 硫酸盐的测定 铬酸钡分光光度法(试行)
Water quality-Determination of sulfate-barium chromate spectrophotometry
2007-03-10
HJ 636-2012
水质 总氮的测定 碱性过硫酸钾消解紫外分光光度法
Water quality-Determination of total nitrogen-Alkaline potassium persulfate digestion UV spectrophotometric method
2012-02-29
GB/T 11894-1989
水质 总氮的测定 碱性过硫酸钾消解紫外分光光度法
Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photo metric method
1989-11-03
DZ/T 0064.60-2021
地下水质分析方法 第60部分:亚硝酸盐的测定 分光光度法
Methods for analysis of groundwater quality—Part 60:Determination of nitrite—Spectrophotometry
2021-02-22
DZ/T 0064.58-2021
地下水质分析方法 第58部分:硝酸盐的测定 二磺酸酚分光光度法
Methods for analysis of groundwater quality—Part 58:Determination of nitrate—Phenol disulfonic acid spectrophotometry
2021-02-22
HG/T 3526-2011
工业循环冷却水中硝酸盐的测定 磺基水杨酸分光光度法
Industrial circulating cooling water determination of nitrate- Spectrophotometric method using sulfosalicylic acid
2011-12-20
HY/T 0345-2022
海水中痕量亚硝酸盐的测定 流动分析-重氮偶联-长光程分光光度法
Determination of seawater trace nitrite—Flow analysis,diazotization and spectrophotometric detection witha long path length flow cell
2022-09-26
HY/T 0346-2022
海水中痕量硝酸盐的测定 流动分析-镉柱还原-重氮偶联-长光程分光光度法
Determination of seawater trace nitrate—Flow analysis,cadmium reduction,diazotization and spectrophotometric detection with a long path length flow cell
2022-09-26
DL/T 502.30-2006
火力发电厂水汽分析方法 第30部分:硝酸盐的测定(水杨酸分光光度法)
Analytical methods of steam and water in power plants Part 30: Determination of nitrates (Spectrometric method using salicylic acid)