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水质 水中铵态氮的测定 小规模密封管法

Water quality — Determination of ammonium nitrogen in water — Small-scale sealed tube method

硝酸铵 第1部分：氨氮含量的测定方法

Ammonium nitrate — Part 1 : Method for determination of ammoniacal nitrogen content

肥料.氨态氮的测定

Fertilizers — Determination of ammoniacal nitrogen

肥料.根据Ulsch测定氮含量和氨态氮含量

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

肥料.依照Arnd法测定硝态氮和氨态氮含量的测定

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd

水质 水中铵态氮的测定 小型密封管法

Water quality. Determination of ammonium nitrogen in water. Small-scale sealed tube method

混合氮质肥料(液态)

Mixed Nitrogen Fertilizer(fluid)

水质 水中铵氮的测定 小型密封管法（ISO 23695:2023）

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023)

水质 水中铵态氮的测定 小规模密封管法

Water quality – Determination of ammonium nitrogen in water – Small-scale sealed tube method

农田土壤中铵态氮、硝态氮的测定 流动注射分析法

Determination of Ammonium Nitrogen and Nitrate Nitrogen in Farmland Soil by Flow Injection Analysis

污泥, 处理过的生物废弃物和土壤. 为可萃取的氨水, 硝酸盐和亚硝酸盐测定而进行的萃取; 德文版本CEN/TS 16177-2012

Sludge, treated biowaste and soil - Extraction for the determination of extractable ammonia, nitrate and nitrite; German version CEN/TS 16177:2012

肥料 氨态氮的测定

Fertilizers - Determination of ammoniacal nitrogen; English version of DIN EN 15475:2009-04

肥料氨氮的测定

Fertilizers - Determination of ammoniacal nitrogen; German version EN 15475:2009 / Note: To be replaced by DIN EN ISO 25475 (2019-06).

肥料 根据德瓦达法测定氮和氨态氮含量

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Devarda; English version of DIN EN 15476:2009-04

肥料 按照乌尔施法测定硝态氮和氨态氮

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch; German version EN 15558:2009

肥料 - 根据 Arnd 测定硝态氮和氨态氮

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd; German version EN 15559:2009

水质 水中铵氮的测定 小型密封管法（ISO 23695:2023） 德语和英语版本 prEN ISO 23695:2025

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023); German and English version prEN ISO 23695:2025

农业用泥煤及其精制品.氨型氮含量的测定法

Peat and products of its proccesing for agriculture. Methods for determination of ammonia nitrogen

工业用硝酸胺.蒸馏后硝酸胺含量的测定法（滴定法）

Ammonium nitrate for industrial use. Method for determination of ammoniacal nitrogen content (titrimetric) after distillation

矿物肥料.干馏后硝酸胺的测定法（滴定法）

Fertilizers. Method for determination of ammoniacal nitrogen content (titrimetric) after distillation

矿物肥料.单元肥料中氮的总含量的测定（胺及酰胺形，无蒸馏氨）

Mineral fertilizers. Method for determination of total mass fraction of nitrogen in single - component fertlizers (in ammonium and amide forms, no deammoniation)

矿物肥料.氨盐中氮含量的测定方法（氨氮形甲醛法）

Mineral fertilizers. Method for determination of mass fraction of nitrogen in ammonium salts (in ammonium form, using the formaldehyde method)

矿物肥料.复合肥料中氮的含量的测定方法（氨氮及酰胺型次氯酸盐法）

Mineral fertilizers. Method for determination of total mass fraction of nitrogen in compound fertilizers (in ammonium and amide forms, using hypochlorite method)

矿物肥料.复合肥料中氨氮含量的测定方法（氯胺法）

Mineral fertilizers. Method for determination of mass fraction of ammonium nitrogen in compound fertilizers (chloramine method)

肥料. 氨态氮的测定

Fertilizers. Determination of ammoniacal nitrogen

肥料. 水溶性钾含量的测定

Fertilizers. Determination of the water-soluble potassium content

肥料. 尿中氮总含量的测定

Fertilizers. Determination of total nitrogen in urea

肥料. 根据Ulsch selon的氮和氨态氮的测定

Fertilizers. Determination of nitric and ammoniacal nitrogen according to Ulsch selon

肥料. 根据Arnd的氮和氨态氮的测定

Fertilizers. Determination of nitric and ammoniacal nitrogen according to Arnd

肥料. 柠檬酸铵碱性溶液中可溶性磷的萃取

Fertilizers. Extraction of phosphorus soluble in ammonium citrate alkaline solution

水质 氨氮在水中的测定 封管比色法

Water quality — Determination of ammonium nitrogen in water — Small-scale sealed tube method

脲铵氮肥

Urea-ammonium mixed nitrogen fertilizer

肥料. 氨态氮的测定

Fertilizers - Determination of ammoniacal nitrogen

肥料 铵态氮的测定

Fertilizers - Determination of ammoniacal nitrogen

肥料 按照乌尔斯希法测定硝态氮和氨态氮

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

肥料 根据阿恩德法测定硝酸氮和氨氮

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Arnd

水质 水中氨氮含量的测定 使用密封小瓶的小型化测试方法（ISO 23695:2023）

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method (ISO 23695:2023)

森林土壤铵态氮的测定

Determination of ammonium nitrogen in forest soil

中性、石灰性土壤铵态氮、有效磷、速效钾的测定联合浸提-比色法

Method for determination of ammonium nitrogen, available phosphorus and rapidly-available potassium in neutrality or calcareous soil Universal extract-colorimetric method

酸性土壤铵态氮、有效磷、速效钾的测定联合浸提-比色法

Method for determination of ammonium nitrogen, available phosphorus and rapidly-available potassium in acid soil Universal extract-colorimetric method

肥料 氨态氮的测定

Fertilizers - Determination of ammoniacal nitrogen

肥料 按乌尔施方法测定硝态氮和铵态氮

Fertilizers - Determination of nitric and ammoniacal nitrogen according to Ulsch

水质 水中铵氮的测定 小型密封管法（ISO 23695:2023 IDT）

Water quality — Determination of ammonium nitrogen in water — Small-scale sealed tube method (ISO 23695:2023, IDT)

肥料.氨氮的测定

Fertilizers - Determination of ammoniacal nitrogen

水质 水中氨氮的测定 小型密封管法

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method

水质 水中铵态氮的测定 小规模密封管法

Water quality - Determination of ammonium nitrogen in water - Small-scale sealed tube method