一阶导数光谱法同时测定水样中的罗丹明B和活性艳红X-3B  

Simultaneous determination of Rhodamine B and reactive brilliant red X-3B in water by first derivative spectrometry

作　　者：高雯婷 廖秀芬 黄权龙 卜鑫焱 周茹霞 赵西连 陈丛瑾 GAO Wenting;LIAO Xiufen;HUANG Quanlong;BU Xinyan;ZHOU Ruxia;ZHAO Xilian;CHEN Congjin(Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology,School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004)

机构地区：[1]广西大学化学化工学院广西石化资源加工及过程强化技术重点实验室,南宁530004

出　　处：《分析试验室》2021年第5期523-528,共6页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(31660183);广西石化资源加工及过程强化技术重点实验室开放基金(2020K003)资助。

摘　　要：为解决罗丹明B(RB)和活性艳红X-3B(RBR)的零阶可见光谱重叠问题,建立了一阶导数光谱法同时检测水样中RB和RBR含量的方法。分别选择540 nm和553 nm作为RB和RBR的测定波长,RB和RBR分别在0.3~14 mg/L浓度范围内与一阶导数光谱呈现线性关系。检出限分别为0.19,0.06 mg/L。在pH 2.99~9.00,常见离子(K^(+),Ca^(2+),Na^(+),Mg^(2+),Cl^(-),NO_(3)^(-),NO_(2)^(-))浓度≤2 mg/L的条件下,对RB和RBR的检测无干扰。该方法同时测定实际水样中RB和RBR的回收率分别为96.6%~102.6%和97.3%~100.5%,相对标准偏差(RSDs)为0.76%~4.4%和0.97%~3.0%,均满足RB和RBR二元体系中各组分的分析要求。A method for simultaneous determination of Rhodamine B( RB) and reactive brilliant red X-3B( RBR) in water by first derivative spectrometry was established to solve the overlapping problem of zero order visible spectra of RB and RBR. RB and RBR showed linear relationships with the first derivative spectra in the concentration range of 0. 3-14 mg/L, respectively. The detection limits were 0. 19 and 0. 06 mg/L,respectively. Under the pH of 2. 99-9. 00,the interference of common ions( K^(+),Ca^(2+),Na^(+),Mg^(2+),Cl^(-),NO_(3)^(-),NO_(2)^(-)) with the concentration below 2 mg/L is limited in RB and RBR detection. For the simultaneous determination of RB and RBR in the actual water samples,the recovery rates of RB and RBR were 96. 6%-102. 6% and 97. 3%-100. 5%,and the relative standard deviations( RSDs) were 0. 76%-4. 4% and0. 97%-3. 0%,respectively,which meet the requirements for the analysis of each component in the binary system of RB and RBR.

关 键 词：罗丹明B 活性艳红X-3B 同时测定 一阶导数光谱法 

分 类 号：O657.3[理学—分析化学]