酰肼和羟基检测标准

铁矿石 铬含量的测定 二苯基碳酰二肼分光光度法

Determination of yishijing tebufenozide,methoxyfenozide,furan tebufeno zide and chromafenozide residues in plant foods - LC-MS-MS method

Chemical analysis methods and determination of physical performance of alumina--Determination of chromium sesquioxide content--Diphenyl carbazide photometric method

Tobacco and tobacco products－Determination of maleic hydrazide residues

Tobacco and tobacco products－Determination of maleic hydrazide residues

Methods for analysis of groundwater quality—Part 17：Determination of total chromium and hexavalent chromium contents—Diphenylcarbazide spectrophotometry

Magnesium and magnesium alloys. Determination of copper content. Oxalyldihydrazide photometric method.

Inspection of tebufenozide residues in cereals and oil seeds for import and export-Gas chromatography mass spectrometry method

Tobacco and tobacco products - Determination of maleic hydrazide residues (ISO 4876:1980)

Manganese ores — Determination of chromium content —Diphenylcarbazide photometric method and silver persulphate titrimetric method

Tobacco and tobacco products — Determination of maleic hydrazide residues

Surface active agents - Determination of hydroxyl value. p-Toluensulfonyl isocyanate (TSI) method and potentiometric titration with tetrabutylammonium hydroxide

Surface active agents. Determination of hydroxyl value. p-Toluensulfonyl isocyanate (TSI) method and potentiometric titration with tetrabutylammonium hydroxide

Manganese ores－Determination of chromium content－Diphenylcarbazide photometric method and silver persulphate titrimetric method

Surface active agents - Determination of hydroxyl value - p-Toluensulfonyl isocyanate (TSI) method and potentiometric titration with tetrabutylammonium hydroxide

Workplace air — Determination of hexavalent chromium in airborne particulate matter — Method by ion chromatography and spectrophotometric measurement using diphenyl carbazide

Workplace air. Determination of hexavalent chromium in airborne particulate matter. Method by ion chromatography and spectrophotometric measurement using diphenyl carbazide

A-hydroxy polyether polyols

Testing of oxidic raw and basic materials for ceramics, glass and glazes - Part 3: Spectrophotometric determination of chrome(VI) with diphenyl carbazide in the presence of chrome(III)