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TAPPI T 418
作者:TECERT 发布于:2022-12-31 19:46:25 检测认证一站式服务 收藏:Ctrl+D
摘要:TAPPI T 418 Organic Nitrogen in Paper and Paperboard 联系我们:info@tecert.com 安排测试 / Contact us for testing.
标准编号 Standard/Code | 标准名称 Standard Title |
TAPPI T 418 | Organic Nitrogen in Paper and Paperboard |
1.1 This method is used for the determination of nitrogen from glue, casein, urea- and melamine-formaldehyde resins, amine and amide polymers, and other nitrogenous organic materials in paper and paperboard.
1.2 The determination does not include all the nitrogen in nitro compounds, nitrates, nitrites, azo, hydrazine, cyanide, or pyridine ring-type compounds, which are not normally found in paper and paperboard.
1.3 Further information about alternate determination of nitrogen compounds such as the Hengar technique can be found in the literature (1).