GB/T 44943-2024
Footwear—Chemical tests—Determination of the content of ortho-phenylphenol—HPLC-MS/MS
GB/T 14849.11-2016
Methods for chemical analysis of silicon metal—Part 11:Determination of chromium content—1,5-Diphenylcarbohydrazide spectrophotometric method
GB/T 6609.10-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of vanadic oxide content--N-benzoyl-N-phenylhydroxylamine extraction photometric method
YS/T 575.12-2007
Methods for chemical analysis of bauxite—Part 12:Determination of vanadium pentoxide content—N-benzoy-N-phenythyroxy lamine photometric method
YS/T 1341.9-2019
Methods for chemical analysis of crude zinc-Part 9:Determination of germanium content-Benzene fluorenone spectrophotometry
HB 5220.33-2008
Methods for chemical analysis of superalloys-Part 33:Determination of niobium content by tetraphenyl arsonium chloride hydrochloride gravimetric method
GB/T 13747.18-2022
Methods for chemical analysis of zirconium and zirconium alloys—Part 18:Determination of vanadium content—N-benzoyl-N-phenyl hydroxylamine spectrophotometry and inductively coupled plasma atomic emission spectrometry
HB/Z 5218.19-2004
Methods for chemical analysis of aluminium alloys-Part 19:Determination of chromium content by diphenylcarbazide spectrophotometric method
GB/T 6609.18-2004
Chemical analysis methods and determination of physical performanceof alumina--Determination of sulfate content--N,N-dimethyl-P-phenylenediamine spectrophotometric method
20242692-T-607
Leather and fur—Chemical tests—Determination of phthalate content
GB/T 20975.13-2008
Methods for chemical analysis of aluminium and aluminium alloys—Part 13:Determination of vanadium content—N-benzoyl-Nphenylhydroxylamine spectrophotometric method
HB 5220.37-2008
Methods for chemical analysis of superalloys-Part 37:Determination of zirconium content by N-benzoyl-N-phenylhydroxylamine-benzene extraction-arsenazo Ⅲ photometric method
HB 5422.6-1989
GB/T 13748.2-2005
Chemical analysis methods of magnesium and magnesium alloys Determination of tin content Pyrocatechol violet spectrophotometric method
YS/T 520.2-2007
Chemical analysis of gallium—Part 2:Determination of lead content—The 4-(2-pyridy lazo)-resorcinol spectrophotometric method
GB/T 34500.2-2017(\u82f1\u6587\u7248)
稀土废渣、废水化学分析方法 第2部分:化学需氧量(COD)的测定
GB/T 22808-2008
Leather and fur—Chemical tests—Determination of pentachlorophenol content
GB/T 6609.8-2004
Chemical analysis methods and determination of physical performance of alumina--Determination of chromium sesquioxide content--Diphenyl carbazide photometric method
GB/T 6730.34-2017(\u82f1\u6587\u7248)
铁矿石 锡含量的测定 邻苯二酚紫-溴化十六烷基三甲胺分光光度法
GB/T 12687.5-1990
Chemical analysis of nitrate of rare earth for agriculture—Determination of chrome content-sys—Diphenyl carbazide spectrophotometric method