ASTM D3590-17 Standard Test Methods for Total Kjeldahl Nitrogen in Water

水中凯氏定氮总氮的标准试验方法

基本信息

标准号

ASTM D3590-17

标准状态

现行

发布单位或类别

美国-美国材料与试验协会(US-ASTM);

发布日期

实施日期

废止日期

CCS分类

ICS分类

13.060.50 水质 - 水的化学物质检验

研制信息

起草单位

- 展开▼

起草人

归口单位

D19.05

摘要

1.1These test methods cover the determination of total Kjeldahl nitrogen. Section24on Quality Control pertains to these test methods. The following test methods are included:SectionsTest Method A—Manual Digestion/Distillation8 –14Test Method B—Semiautomated Colorimetric Bertholt15 –231.2The analyst should be aware that precision and bias statements included may not necessarily apply to the water being tested.1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.1.5This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ======4.1These test methods are useful for measuring organic nitrogen and ammoniacal nitrogen, which are essential growth nutrients.4.2Nitrogen compounds are widely distributed in the environment. Sources of nitrogen include surface-applied fertilizers, cleaning products, and drinking water treatment aids. Because nitrogen is a nutrient for photosynthetic organisms, it may be important to monitor and control discharge into the environment. 1.1这些试验方法包括凯氏氮总量的测定。部分24质量控制与这些试验方法有关。包括以下试验方法:小节试验方法A-手动消化/蒸馏8 –14试验方法B-半自动比色Bertholt15 –231.2分析员应注意，所包含的精度和偏差声明可能不一定适用于被测试的水。1.3以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。1.4本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。1.5本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。====意义和用途======4.1这些测试方法有助于测量有机氮和氨氮，它们是必需的生长营养素。4.2氮化合物广泛分布于环境中。氮的来源包括表面施用的肥料、清洁产品和饮用水处理剂。由于氮是光合生物的营养物质，因此监测和控制排放到环境中可能很重要。展开▼

关联标准

代替如下标准

1.ASTM D3590-11 Standard Test Methods for Total Kjeldahl Nitrogen in Water。

相似标准

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