化工技术与开发
化工技術與開髮
화공기술여개발
TECHNOLOGY & DVELOPMENT OF CHEMICAL INDUSTRY
2013年
11期
49-51
,共3页
分光光度法%AHMT%测定%废水%甲醛
分光光度法%AHMT%測定%廢水%甲醛
분광광도법%AHMT%측정%폐수%갑철
spectrophotometry%AHMT%determination%wastewater%formaldehyde
甲醛与4-氨基-3-联氨-5-巯基-1,2,4-三氮杂茂（简称AHMT）溶液在碱性条件下缩合，然后经高碘酸钾氧化成6-巯基-5-三氮杂茂(4,3-b)-S-四氮杂苯紫红色化合物，其颜色的深浅与甲醛含量成正比。方法的最大吸收波长为554nm，甲醛含量在0~12μg·10mL-1范围内具有良好的线性关系，相关系数为0.9959，用于测定有机实验废水中微量甲醛的含量，相对标准偏差为3.45%，加标回收率在95.4%~110.5%之间。
甲醛與4-氨基-3-聯氨-5-巰基-1,2,4-三氮雜茂（簡稱AHMT）溶液在堿性條件下縮閤，然後經高碘痠鉀氧化成6-巰基-5-三氮雜茂(4,3-b)-S-四氮雜苯紫紅色化閤物，其顏色的深淺與甲醛含量成正比。方法的最大吸收波長為554nm，甲醛含量在0~12μg·10mL-1範圍內具有良好的線性關繫，相關繫數為0.9959，用于測定有機實驗廢水中微量甲醛的含量，相對標準偏差為3.45%，加標迴收率在95.4%~110.5%之間。
갑철여4-안기-3-련안-5-구기-1,2,4-삼담잡무（간칭AHMT）용액재감성조건하축합，연후경고전산갑양화성6-구기-5-삼담잡무(4,3-b)-S-사담잡분자홍색화합물，기안색적심천여갑철함량성정비。방법적최대흡수파장위554nm，갑철함량재0~12μg·10mL-1범위내구유량호적선성관계，상관계수위0.9959，용우측정유궤실험폐수중미량갑철적함량，상대표준편차위3.45%，가표회수솔재95.4%~110.5%지간。
Formaldehyde comdersed with 4-amino-3-hydrazino-5-mercapto-1,2,4-triazole (hereinafter referred to as AHMT) in alkaline solution condition, and then oxidized by potassium periodate to 6-mercapto-5-triazole (4,3-b)-S-tetrazine purplish red compounds, the color depth was proportional to the content of formaldehyde. The maximum absorption wavelength was at 554 nm. Formaldehyde content in 0~12μg/10mL range had a good linear relationship, the correlation coefficient was 0.9959. The method was used to determine the content of trace formaldehyde in the organic experiment wastewater, the relative standard deviation was 3.45%(n=5), the recovery of standard addition was 95.4%~110.5%.
