三氧化二铋电极上的阳极溶出伏安法测定黑木耳中铅和镉残留
|
摘要
采用Bi_2O_3@石墨烯材料修饰玻碳电极,建立了阳极溶出伏安法同时快速测定黑木耳中铅和镉残留含量的检测方法,并对测试方法进行了优化。研究结果表明,优化实验条件下,在0～210μg/L质量浓度范围内,Pb~(2+)的溶出峰电流与Pb~(2+)的质量浓度呈线性关系(r=0. 9972);Cd~(2+)的溶出峰电流与Cd~(2+)的质量浓度在0～90μg/L,90～210μg/L范围内分别呈线性关系,(r=0. 9958,r=0. 9911),Pb~(2+)和Cd~(2+)的检出限分别为0. 02和0. 25μg/L(S/N=3)。黑木耳中Pb~(2+)和Cd~(2+)的残留含量测定结果与经典的原子吸收光谱法相比,两者无显著性差异(P>0. 05),表明该方法可用于黑木耳中铅和镉的残留量的同时检测。
The use of Bi_2O_3@ graphene modified glassy carbon electrode for the anodic stripping voltammetry determination of lead and cadmium in auricularia auricular was described. Various experimental parameters such as pH,deposition potential and deposition time were optimized. Under the optimal test conditions,the anodic stripping voltammetry peak current was proportional to Pb~(2+)concentration in the range of 0 ～ 210 μg/L( r = 0. 9972). The anodic stripping voltammetry response of Cd~(2+)was linear in the range of 0 ～ 90 μg/L and 90 ～ 210 μg/L,respectively( r = 0. 9958 and r =0. 9911). And the limits of detection( S/N = 3) were 0. 02 μg/L and 0. 25 μg/L for Pb~(2+)and Cd~(2+),respectively. The method can be used for the simultaneous determination of lead and cadmium in auricularia auricular,as there was no significant difference( P > 0. 05) between the results from anodic stripping voltammetry and atomic absorption spectroscopy.
The use of Bi_2O_3@ graphene modified glassy carbon electrode for the anodic stripping voltammetry determination of lead and cadmium in auricularia auricular was described. Various experimental parameters such as pH,deposition potential and deposition time were optimized. Under the optimal test conditions,the anodic stripping voltammetry peak current was proportional to Pb~(2+)concentration in the range of 0 ～ 210 μg/L( r = 0. 9972). The anodic stripping voltammetry response of Cd~(2+)was linear in the range of 0 ～ 90 μg/L and 90 ～ 210 μg/L,respectively( r = 0. 9958 and r =0. 9911). And the limits of detection( S/N = 3) were 0. 02 μg/L and 0. 25 μg/L for Pb~(2+)and Cd~(2+),respectively. The method can be used for the simultaneous determination of lead and cadmium in auricularia auricular,as there was no significant difference( P > 0. 05) between the results from anodic stripping voltammetry and atomic absorption spectroscopy.
引文
[1] QIU H OU,BAO Y Q,KONG B B. Chin. J. Anal. Lab.,2018,37(1):108邱海鸥,包娅琪,孔贝贝.分析试验室,2018,37(1):108
[2] HUANG Z J,CHEN M J,DENG H Y,et al. Chin. J. Anal. Lab.,2017,36(1):24黄子敬,陈孟君,邓华阳,等.分析试验室,2017,36(1):24
[3] YANG J,XU L,SONG J P et al. Chin. J. Anal. Lab.,2017,36(12):1386杨捷,许琳,宋金萍,等.分析试验室,2017,36(12):1386
[4] XU H L,WU X Y,NIE S P,et al. Food Sci,2016,37(10):100许海林,吴小勇,聂少平,等.食品科学,2016,37(10):100
[5] YU M H,ZHAO X,YIN H L,et al. Food Sci,2017,38(1):232于美汇,赵鑫,尹红力,等.食品科学,2017,38(1):232
[6] Nguyen T L,Wang D Y,Hu Y L,et al. Carbohydrate Polymers,2012,89(4):1117
[7] WANG M,YANG B Y,LIU Q F,et al. Chin. J. Anal. Lab.,2013,32(1):12王梅,杨冰仪,刘秋芳,等.分析试验室,2013,32(1):12
[8] LIANG W T,TIAN P,XIN S G,et al. Shandong Chem Ind,2017,46(2):54梁婉婷,田鹏,辛士刚,等.山东化工,2017,46(2):54
[9] ZHAO P. Phys Test Chem Anal(Part B:Chem Anal),2017,53(2):224赵鹏.理化检验-化学分册,2017,53(2):224
[10] WANG W,LI H Y,WANG Z J,et al. Chin. J. Anal. Lab.,2016,35(7):822王婉,李海玉,王志娟,等.分析试验室,2016,35(7):822
[11] SONG Q Y,MA Y J,ZHOU X Y,et al. J. Northwest Normal Univ(Nat Sci),2007,43(5):54宋青云,马永钧,周秀英,等.西北师范大学学报:自然科学版,2007,43(5):54
[12] XU X Y,YANG Y N,YAO W R,et al. Chin. J. Anal. Lab.,2016,35(11):1264徐晓瑜,杨琰宁,姚卫蓉,等.分析试验室,2016,35(11):1264
[13] Cui L,Wu J,Ju H X. Biosensors and bioelectronics,2015,63:276
[14] Zhu X S,Gao C,Choi J W,et al. Lab on a Chip,2005,5(2):212
[15] Chen C,Niu X,Chai Y,et al. Sens Actuators B,2013,178:339
[16] LI J,LI H B,FAN D H,et al. Food Sci,2011,32(10):107李静,李红波,范大和,等.食品科学,2011,32(10):107
[17] Fang W,Zhang N Q,Fan L S,Sun K N. Power Sources,2016,333(30):30
[18] Fang W,Zhang N Q,Fan L S,Sun K N. RSC Adv.,2016,6(102):99825
[19] GONG W L,DU X Y,WANG S R,et al. J. Anal. Chem.,2008,36(2):177公维磊,杜晓燕,王舒然,等.分析化学,2008,36(2):177
[20] Cao L Y,Jia J B,Wang Z H. Electrochim Acta,2008,53(5):2177
[2] HUANG Z J,CHEN M J,DENG H Y,et al. Chin. J. Anal. Lab.,2017,36(1):24黄子敬,陈孟君,邓华阳,等.分析试验室,2017,36(1):24
[3] YANG J,XU L,SONG J P et al. Chin. J. Anal. Lab.,2017,36(12):1386杨捷,许琳,宋金萍,等.分析试验室,2017,36(12):1386
[4] XU H L,WU X Y,NIE S P,et al. Food Sci,2016,37(10):100许海林,吴小勇,聂少平,等.食品科学,2016,37(10):100
[5] YU M H,ZHAO X,YIN H L,et al. Food Sci,2017,38(1):232于美汇,赵鑫,尹红力,等.食品科学,2017,38(1):232
[6] Nguyen T L,Wang D Y,Hu Y L,et al. Carbohydrate Polymers,2012,89(4):1117
[7] WANG M,YANG B Y,LIU Q F,et al. Chin. J. Anal. Lab.,2013,32(1):12王梅,杨冰仪,刘秋芳,等.分析试验室,2013,32(1):12
[8] LIANG W T,TIAN P,XIN S G,et al. Shandong Chem Ind,2017,46(2):54梁婉婷,田鹏,辛士刚,等.山东化工,2017,46(2):54
[9] ZHAO P. Phys Test Chem Anal(Part B:Chem Anal),2017,53(2):224赵鹏.理化检验-化学分册,2017,53(2):224
[10] WANG W,LI H Y,WANG Z J,et al. Chin. J. Anal. Lab.,2016,35(7):822王婉,李海玉,王志娟,等.分析试验室,2016,35(7):822
[11] SONG Q Y,MA Y J,ZHOU X Y,et al. J. Northwest Normal Univ(Nat Sci),2007,43(5):54宋青云,马永钧,周秀英,等.西北师范大学学报:自然科学版,2007,43(5):54
[12] XU X Y,YANG Y N,YAO W R,et al. Chin. J. Anal. Lab.,2016,35(11):1264徐晓瑜,杨琰宁,姚卫蓉,等.分析试验室,2016,35(11):1264
[13] Cui L,Wu J,Ju H X. Biosensors and bioelectronics,2015,63:276
[14] Zhu X S,Gao C,Choi J W,et al. Lab on a Chip,2005,5(2):212
[15] Chen C,Niu X,Chai Y,et al. Sens Actuators B,2013,178:339
[16] LI J,LI H B,FAN D H,et al. Food Sci,2011,32(10):107李静,李红波,范大和,等.食品科学,2011,32(10):107
[17] Fang W,Zhang N Q,Fan L S,Sun K N. Power Sources,2016,333(30):30
[18] Fang W,Zhang N Q,Fan L S,Sun K N. RSC Adv.,2016,6(102):99825
[19] GONG W L,DU X Y,WANG S R,et al. J. Anal. Chem.,2008,36(2):177公维磊,杜晓燕,王舒然,等.分析化学,2008,36(2):177
[20] Cao L Y,Jia J B,Wang Z H. Electrochim Acta,2008,53(5):2177