广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2015年
12期
61-63
,共3页
工业循环水%亚硝酸盐%测定%优化条件
工業循環水%亞硝痠鹽%測定%優化條件
공업순배수%아초산염%측정%우화조건
industrial circulating water%nitrite%determination%optimal conditions
使用可见分光光度法(N-(1-萘基)-胺光法)对工业循环冷却水中亚硝酸盐含量进行了系统优化,主要考察了样品酸度、显色剂时效性与剂量、样品取样量、反应时期对亚硝酸盐测定效果的影响。结果表明:样品酸度控制在pH=1.8~2.0范围内,亚硝酸盐的检测效果较好,在pH=1.9时效果最佳;显色剂N-(1-萘基)-1,2-乙二胺二盐酸盐在配置后29 d内使用,剂量选择4.00 mL左右测定效果为最佳;样品循环冷却水中含有氯胺、氯等杂质影响检测效果,取样量宜选择10.00 mL左右为宜;亚硝酸盐生成重氮盐,再偶联生成红色染料,反应时间宜选择20 min为最佳。
使用可見分光光度法(N-(1-萘基)-胺光法)對工業循環冷卻水中亞硝痠鹽含量進行瞭繫統優化,主要攷察瞭樣品痠度、顯色劑時效性與劑量、樣品取樣量、反應時期對亞硝痠鹽測定效果的影響。結果錶明:樣品痠度控製在pH=1.8~2.0範圍內,亞硝痠鹽的檢測效果較好,在pH=1.9時效果最佳;顯色劑N-(1-萘基)-1,2-乙二胺二鹽痠鹽在配置後29 d內使用,劑量選擇4.00 mL左右測定效果為最佳;樣品循環冷卻水中含有氯胺、氯等雜質影響檢測效果,取樣量宜選擇10.00 mL左右為宜;亞硝痠鹽生成重氮鹽,再偶聯生成紅色染料,反應時間宜選擇20 min為最佳。
사용가견분광광도법(N-(1-내기)-알광법)대공업순배냉각수중아초산염함량진행료계통우화,주요고찰료양품산도、현색제시효성여제량、양품취양량、반응시기대아초산염측정효과적영향。결과표명:양품산도공제재pH=1.8~2.0범위내,아초산염적검측효과교호,재pH=1.9시효과최가;현색제N-(1-내기)-1,2-을이알이염산염재배치후29 d내사용,제량선택4.00 mL좌우측정효과위최가;양품순배냉각수중함유록알、록등잡질영향검측효과,취양량의선택10.00 mL좌우위의;아초산염생성중담염,재우련생성홍색염료,반응시간의선택20 min위최가。
The system on the content of nitrite in industrial circulating water by visible spectrophotometry ( N-( 1-naphthyl )-amine light method ) was optimized.The effect of sample acidity , reagent timeliness and dose , sample quantity , reaction time on determination of nitrite were investigated.The results showed that the acidity of sample was controlled in pH 1.8 ~2 , the detection effect of nitrite was good , and the effect was the best when pH was 1.9.Chromogenic agent N-( 1-naphthyl )-1, 2-Ethylenediamine Dihydrochloride could be using within 29 days after configuration , 4.00 mL was the best choice for the effect of determination.Samples circulating cooling water containing chloramine , chlorine and other impurities would affect the test results.The sample size should be chosen about 10.00 mL appropriately.Nitrite created diazonium salt , then coupling to produce red dye , the reaction time should be chosen as 20 min was the best.