应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2014年
12期
2300-2303
,共4页
分光光度法%硫酸铵%羟基乙酸%乙酰丙酮%定量分析
分光光度法%硫痠銨%羥基乙痠%乙酰丙酮%定量分析
분광광도법%류산안%간기을산%을선병동%정량분석
spectrophotometry%ammonium sulfate%glycolic acid%acetylacetone%quantitative analysis
硫酸铵、羟基乙酸（ GA）混合溶液中各组分定量分析时均存在另一组分的严重干扰。在甲醛法测定硫酸铵含量、酸碱滴定法测定羟基乙酸含量基础上，引入乙酰丙酮分光光度法，改进并建立了混合溶液中各组分定量分析方法。探讨了检测波长、羟基乙酸浓度、乙醇浓度、恒温时间、反应温度、pH值对3，5-二乙酰基-1，4-二氢二甲基吡啶（DDL）溶液吸光度的影响。该方法的适宜条件为：pH =5~7，ω（GA）﹤90%，60℃恒温15 min，测定波长414 nm。线性方程Ar =0.2425 C+0.0040，线性范围0.05~4.00μg/mL，R2=0.9999。方法测硫酸铵含量RSD﹤1.5%，羟基乙酸含量RSD﹤1.8%。此分析方法快捷、简便、灵敏、准确。
硫痠銨、羥基乙痠（ GA）混閤溶液中各組分定量分析時均存在另一組分的嚴重榦擾。在甲醛法測定硫痠銨含量、痠堿滴定法測定羥基乙痠含量基礎上，引入乙酰丙酮分光光度法，改進併建立瞭混閤溶液中各組分定量分析方法。探討瞭檢測波長、羥基乙痠濃度、乙醇濃度、恆溫時間、反應溫度、pH值對3，5-二乙酰基-1，4-二氫二甲基吡啶（DDL）溶液吸光度的影響。該方法的適宜條件為：pH =5~7，ω（GA）﹤90%，60℃恆溫15 min，測定波長414 nm。線性方程Ar =0.2425 C+0.0040，線性範圍0.05~4.00μg/mL，R2=0.9999。方法測硫痠銨含量RSD﹤1.5%，羥基乙痠含量RSD﹤1.8%。此分析方法快捷、簡便、靈敏、準確。
류산안、간기을산（ GA）혼합용액중각조분정량분석시균존재령일조분적엄중간우。재갑철법측정류산안함량、산감적정법측정간기을산함량기출상，인입을선병동분광광도법，개진병건립료혼합용액중각조분정량분석방법。탐토료검측파장、간기을산농도、을순농도、항온시간、반응온도、pH치대3，5-이을선기-1，4-이경이갑기필정（DDL）용액흡광도적영향。해방법적괄의조건위：pH =5~7，ω（GA）﹤90%，60℃항온15 min，측정파장414 nm。선성방정Ar =0.2425 C+0.0040，선성범위0.05~4.00μg/mL，R2=0.9999。방법측류산안함량RSD﹤1.5%，간기을산함량RSD﹤1.8%。차분석방법쾌첩、간편、령민、준학。
The quantitative analysis of each component in ammonium sulfate,glycolic acid mixed solution was serious interfered by the other component. A improved quantitative analytical method,based on deter-mination of ammonium sulfate content by formaldehyde and determination of glycolic acid content by acid-base titration,introduced the acetylacetone spectrophotometry,was established for determination of each component content in mixed solution. The effects of detection wavelength,glycolic acid and alcohol con-centration,constant temperature time,reaction temperature,pH value on determination of 3,5-diacetyl-1, 4-dihydro-2,6-lutidine(DDL)solution absorbance were studied. Suitable conditions:pH=5~7,ω(GA)﹤90%,60 ℃ constant temperature for 15 min,the optimal detection wavelength was 414 nm. The equa-tion was expressed as Ar =0. 242 5C +0. 004 0,and its linear range of standard curve was 0. 05 ~4. 00 μg/mL,R2 =0. 999 9. The relative standard deviations on determination of ammonium sulfate con-tent were below 1 . 5% and determination of glycolic acid content were below 1 . 8%. The analytical meth-od established in this work is rapid,convenient,sensitive and accurate.
