贵州化工
貴州化工
귀주화공
GUIZHOU CHEMICAL INDUSTRY
2011年
6期
24-26
,共3页
水蒸汽蒸馏%乙酰丙酮%分光光度法%甲醛%水性胶粘剂
水蒸汽蒸餾%乙酰丙酮%分光光度法%甲醛%水性膠粘劑
수증기증류%을선병동%분광광도법%갑철%수성효점제
steam distillation%aeetylacetone%spectrophotometry%formaldehyde%water - based adhesives
主要研究用水蒸汽蒸馏法进行样品处理，用乙酰丙酮分光光度法测定样品中游离甲醛的含量。对用水蒸汽蒸馏和未用水蒸汽蒸馏的甲醛标准曲线进行比较，两曲线几乎相同，其线性范围为1—40峭，相关系数为0．9998，在蒸馏水及水性胶粘剂中进行加标回收试验，平均回收率分别为96．2％和96．9％，对水性胶粘剂样品中甲醛含量的测定，结果的相对标准偏差为1．21％，并讨论了该方法的最佳实验条件，在pH=6、波长413nm的条件下，有较好的吸收峰。该方法操作简单、实用性强，具有较高的精密度和准确度。
主要研究用水蒸汽蒸餾法進行樣品處理，用乙酰丙酮分光光度法測定樣品中遊離甲醛的含量。對用水蒸汽蒸餾和未用水蒸汽蒸餾的甲醛標準麯線進行比較，兩麯線幾乎相同，其線性範圍為1—40峭，相關繫數為0．9998，在蒸餾水及水性膠粘劑中進行加標迴收試驗，平均迴收率分彆為96．2％和96．9％，對水性膠粘劑樣品中甲醛含量的測定，結果的相對標準偏差為1．21％，併討論瞭該方法的最佳實驗條件，在pH=6、波長413nm的條件下，有較好的吸收峰。該方法操作簡單、實用性彊，具有較高的精密度和準確度。
주요연구용수증기증류법진행양품처리，용을선병동분광광도법측정양품중유리갑철적함량。대용수증기증류화미용수증기증류적갑철표준곡선진행비교，량곡선궤호상동，기선성범위위1—40초，상관계수위0．9998，재증류수급수성효점제중진행가표회수시험，평균회수솔분별위96．2％화96．9％，대수성효점제양품중갑철함량적측정，결과적상대표준편차위1．21％，병토론료해방법적최가실험조건，재pH=6、파장413nm적조건하，유교호적흡수봉。해방법조작간단、실용성강，구유교고적정밀도화준학도。
Main steam distillation of water sample handling, with acetylacetone spectrophotometric determination of free formaldehyde content of the sample. Steam distillation of water and water steam distillation of the formaldehyde is not the standard curve to compare the two curves is almost the same, the linear range of 1 -40μg, a correlation coefficient of 0.9998, in distilled water and spiked water - based adhesives in the recovery experiment, the average recovery were 96.2% and 96.9%, water - based adhesive for the determination of formaldehyde content in the sample, the relative standard deviation of 1.21%, and discussed the method of optimal experimental conditions, at pH = 6, under the conditions of wavelength 413nm, with better absorption. The method is simple, practical, high precision and accuracy.
