ISO 3391-1976

天然和人造冰晶石 钙含量的测定 火焰原子吸收法

Cryolite, natural and artificial -- Determination of calcium content -- Flame atomic absorption method

适用范围：Describes the preparation of the calibration graph and the dissolution of a test portion in concentrated sulphuric acid and heating on a hot-plate until the hydrofluoric acid has evaporated. Treatment ...

发布日期：1976-09-01  实施日期：1976-09-01

NF A06-408-1979

铅的化学分析 砷的分光光度测定 （每吨含量为0.5 克至20克）

Chemical analysis of lead. Spectrophotometric determination of arsenic.

实施日期：1979-05-01

NF X43-013-1977

周围空气中二氧化硫浓度的测定 ＴＨＯＲＩＮ分光光度分析法

Atmospheric pollution.determination of the concentration by mass ofsulphur dioxide, in the ambient air.analysis by the thorin spectrophotometric method.

实施日期：1977-12-01

NF A11-101-1983

铌铁的化学分析. 铌的测定( 重力法).钽的测定( 分光光度法)

Chemical analysis of ferroniobium. Determination of niobium content gravimetric method. Determination of tantalum content. Spectrophotometric method.

实施日期：1983-06-01

NF T20-297-1971

硫酸和发烟硫酸的化学分析 氨氮的测定

Chemical analysis of sulphuric acid and oleum. Determination of ammoniacal nitrogen. Spectrophotometric method.

ISO 2992-1974

工业用硫酸铵 铁含量的测定 2,2"-联吡啶光度法

Ammonium sulphate for industrial use -- Determination of iron content -- 2,2''- Bipyridyl photometric method

适用范围：Applicable to Fe contents of equal to or more than 0.0001 % (m/m). The reaction bases on the reduction of iron(III) by hydroxylammonium chloride. Formation of the complex between iron(II) and 2,2''-dip...

发布日期：1974-04-01  实施日期：1974-04-01

NF A20-425-1984

铁矿石. 铬的分光光度法测定

Iron ores. Spectrophotometric determination of chromium.

实施日期：1984-10-01

NF A06-576-1966

铝和铝合金的化学分析 锰的分光光度测定

Chemical analysis of aluminium and aluminium alloys. Spectrophotometric determination of manganese.

实施日期：1966-04-01

NF T20-418-1975

工业碳酸钠 铁含量的测定 １,１０－菲绕啉光度法

Sodium carbonate for industrial use. Determination of iron content. 1,10 - Phenanthroline photometric method.

实施日期：1975-07-01

NF A06-410-1976

铅的化学分析 锑的分光光度测定

Chemical analysis of lead. Spectrophotometric determination of antimony.

实施日期：1976-06-01

NF B49-416-1969

硅材料、硅土材料和粘土材料 磷的测定

Chemical analysis of refractories. Silica materials, silico-argillaceous and argillaceous materials. Determination of phosphorus.

NF A06-553-1966

铝和铝合金的化学分析 锌的测定 （原批准代号为A06-573）

Chemical analysis of aluminium and aluminium alloys. Determination of zinc.

实施日期：1966-04-01

NF V04-409-1974

肉和肉制品 亚硝酸盐的测定 ( 参考法)

Meat and meat products. Determination of nitrite content (reference method).

实施日期：1974-12-01

ISO 7834-1987

铁矿石 砷含量的测定 钼兰光分光光度法

Iron ores -- Determination of arsenic content -- Molybdenum blue spectrophotometric method

适用范围：The method ist applicable to a concentration range of 0,0001 to 0,1 % (m/m) (1 bis 1000 /g) of arsenic in natural iron ores, and iron ore concentrates and agglomerates including sinter products. Specif...

发布日期：1987-12-01  实施日期：1987-12-01

NF T60-224-1969

动物脂肪和植物脂肪 颜色的分光光度法测定

Animal and vegetable fats. Spectrophotometric determination of colour.

ISO 4876-1980

烟草和烟草制品 马束酰肼残留量的测定

Tobacco and tobacco products -- Determination of maleic hydrazide residues

适用范围：This method is also applicable to the residues from maleic hydrazide sucker control agents used on tobacco crops. Annex A describes optional extra procedure such as acid pre-digestion and carbon clean-...

发布日期：1980-04-01  实施日期：1980-04-01

NF A06-336-1990

钢和铸铁.铜含量.2.2-双喹啉基分光光度法

Steel and cast iron. Determination of copper content. 2,2'-diquinolyl pectrophotometric method.

NF A20-420-1987

Iron ores. Determination of manganese content. Periodate spectrophotometric method.

NF A06-401-1975

铅的化学分析 铜的分光光度测定

Chemical analysis of lead. Spectrophotometric determination of copper.

实施日期：1975-02-01

NF A06-311-1987

钢和生铁的化学分析 钴的测定 比色法

Chemical analysis of steel and cast iron. Determination of cobalt content. Molecular absorption spectrophotometric method.