微分电位溶出法
微分电位溶出法的相关文献在1989年到2021年内共计144篇,主要集中在预防医学、卫生学、化学、临床医学
等领域,其中期刊论文142篇、会议论文2篇、专利文献195059篇;相关期刊85种,包括广东微量元素科学、邯郸医学高等专科学校学报、冶金分析等;
相关会议2种,包括中国营养学会妇幼营养第七次全国学术会议、第七届全国电分析化学学术会议等;微分电位溶出法的相关文献由269位作者贡献,包括张文德、章建军、黄建钦等。
微分电位溶出法—发文量
专利文献>
论文:195059篇
占比:99.93%
总计:195203篇
微分电位溶出法
-研究学者
- 张文德
- 章建军
- 黄建钦
- 刘琼
- 张霞
- 李向力
- 高云涛
- 万永平
- 刘红伟
- 吕建民
- 孙世义
- 孟祥萍
- 王国玲
- 但德忠
- 何海健
- 倪镇雄
- 冯生知
- 刘文杰
- 叶坚
- 周学进
- 屈凌波
- 张丽萍
- 张勋
- 徐向荣
- 戴云
- 晁娅楠
- 朱美蓉
- 李宗平
- 李建军
- 李建平
- 李晓菊
- 杨增
- 杨翠英
- 沈颐涵
- 王伟
- 胡志芬
- 薛海峰
- 赵寿春
- 赵广英
- 阮静纯
- 高玉梅
- 于寿进
- 任江林
- 伍季
- 何宝燕
- 何桂兰
- 余晓丹
- 余晓刚
- 公方美
- 冯淑荣
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张京;
薛雯蔚;
孟丽莎;
曾嵘斌;
陈昌云
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摘要:
建立了硝酸提取-微分电位溶出法测定液态食品中铅含量.通过与国标所述前处理和检测方法所得数据比对,其回收率、精密度均在可接受范围内,证明其可能性.结果表明,该法测得铅标准溶液的标准曲线回归方程为:Y=3.436C+321,R^(2)=0.99913,其中线性范围为0.0000~400.0000μg/L.该法适用于快速检测日常生活中不同溶液状态的液态食品的铅含量.
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刘琼
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摘要:
制备了镀有致密铋膜的嵌入式碳纳米管,并将其制成工作电极,采用循环伏安法(CV法)研究了锌的电化学行为.结果表明锌在在嵌入式碳纳米管玻碳电极出现不可逆单氧化峰,氧化峰电位Epa为-0.06 V,峰电流Ipa为10.90μA.在电极上的质子和电子转移数都为1.利用微分电位溶出法研究了嵌入式碳纳米管玻碳电极上同位铋膜的方法,对影响镀铋膜的条件进行了探讨,获得测定的最佳条件研究了影响锌微分电位溶出的因素,获得最佳条件是富集电位为-1.1V,铋质量浓度为0.4 mg/L,pH=4.6的HAc-NaAc缓冲液.标准加入法计算样品含量,在此条件下,峰高与锌质量浓度在0~50.0μg/L范围呈线性关系,检出限为0.84μg/L.测定样品含量,RSD在1.56%~7.90%之间,回收率在96.4%~112.0%之间.
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唐寅;
盛青松;
张同军;
辛君伟
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摘要:
目的 评价芯片传感-微分电位溶出法在临床血铅检测的准确度和重复性,并与氢化物发生原子荧光法比较,为临床选择检测方法提供参考依据.方法 分别运用芯片传感-微分电位溶出法和氢化物发生原子荧光法同时检测血液样本和标准物质(为2011年全国血铅检测室间质评样本),评价芯片传感-微分电位溶出法的正确度、重复性、回收率、可报告范围和符合率.结果 以靶值±10%作为允许误差,6种标准物质的芯片传感-微分电位溶出法测定结果与靶值比较,均在允许误差范围之内,正确度良好;低、中、高3个水平样本的相对标准偏差(RSD)分别为6.98%、4.09%、2.78%;平均回收率为98.1%,系统比例误差为1.9%;与氢化物发生原子荧光法比较,差异无统计学意义(P>0.05),线性回归分析相关系数(r2)=0.964,2种方法测定结果的符合度为96.4%.结论 芯片传感-微分电位溶出法准确度高、重复性好、精密度佳,适用于临床血铅检测.
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高云涛;
周学进;
刘琼;
张公信;
李晓芬
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摘要:
制备了一种新型嵌入式碳纳米管-铋复合膜玻璃碳电极,利用循环伏安法研究了Cd在电极上的电化学行为.Cd在电极具有一个不可逆的氧化峰,Epa=0.637 V(vs.SCE),电极对Cd具有高灵敏的电化学响应.研究了影响Cd微分电位溶出的因素,获得的最佳条件是:富集电位为-1.1V,Bi3+浓度为0.4 mg/L,pH 4.6 HAc-NaAc缓冲溶液.通过同位镀铋、标准加入法进一步提高了分析的可靠性.在最佳条件下,峰高与Cd质量浓度在0.1~2.0 μg/L范围呈线性,检出限为0.2 μg/L.对实际样品进行测定,测定值与原子吸收光谱法的结果一致,RSD在3.1%~7.2%范围,回收率在92%~102%之间.%A novel inlaid carbon nanotubes-bismuth film glassy carbon electrode was prepared. The electrochemical behavior of Cd on the electrode was investigated by cyclic voltammetry. An inrevers-ible oxidation peak of Cd on the electrode was observed, Epa = 0. 637 V(vs. SCE). High sensitive electrochemical response of Cd on this electrode was obtained. The influencing factors for differential po-tentiometric stripping analysis of Cd were tested. The optimum conditions were -1.1 V of deposition potential, 0. 4 mg/L of Bi3+ concentration, pH 4. 6 Hac-NaAc buffer solution. The analytical reliability of this electrode was enhanced by in-situ plated bismuth film and standard addition method. The stripping peak height (dt/dE) is a linear function of Cd concentration over the range 0. 1 - 2. 0 μg/L in the optimum conditions, with the detection limit of 0. 2 μg/L. The proposed method was application in the determination of Cd in practical samples, the result was in agreement with those provided by AAS, RSD and the recovery were 3. 1% -7. 2% , 92% -102% , respectively.
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马建坤;
何桂兰;
高云涛;
刘琼;
刘晓海
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摘要:
Inlaide carbon nanotubes - bismuth film modified electrode was prepared based on glassy carbon electrode. The electrochemical behavior of Pb was investigated by potentiometric stripping analysis. A determination method of Pb in coatings was established. The results showed that at electrolysis potential of -1. 1 V and Hac - NaAc(pH =4. 60)buffer solution, the linear relation between the stripping peak (dt/dE) and the concentration of Pb langed from 0. 1 to 20 μg/L, with the detection limit 0. 5 μg/L and RSD and the recovery 3. 8% ~7. 1% and 95. 2% -98. 7% respectively for a sample test.%制备了嵌入式多壁碳纳米管膜玻璃碳电极,研究了铅在电极上的电位溶出行为,建立了嵌入式碳纳米管-铋复合膜电极测定铅的微分电位溶出分析法.结果表明:富集电位为-1.1V,HAc - NaAc(pH =4.60)缓冲溶液中,峰高与铅浓度在0.1 ~20.0 μg/L范围呈线性,检出限为0.5 μg/L,对实际样品进行测定,相对标准偏差(RSD)值在3.8% ~7.1%之间,回收率在95.2% ~98.7%之间.
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谭君林;
胡存杰;
李建平
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摘要:
建立了掺杂硒碳糊电极同时测定铜和铋的微分电位溶出法.在HCl(0.05 mol/L)中,在-0.3 V(vs.Ag/AgCD下,Cu2和Bi3+电沉积在电极表面,再在溶液中溶解氧的作用下,铜和铋从电极表面溶出,分别于0.30 V和0.02 V获得灵敏的电位溶出峰.微分电位溶出峰高(dt/dE)与铜和铋的浓度成线性关系,线性范围为5.0×10-9~1.55×10-7 mol/L,检出限分别为4.0×10-9和2.5×10-9 mol/L(S/N=3).方法用于实际样品中铜和铋的测定,结果令人满意.
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肖义森
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摘要:
Objective To construct and evaluate the differential potentiometric stripping methods for the detection of trace lead in whole blood. Methods This detection method was evaluated, according to related standards. Results The linear range of this method was 0-10μg/L, with a correlation coefficient of 0. 999 6. The detection limit was 0.2μg/L and coefficient of variation was lower than 4%. The detection results of this method for the detection of national standard materials were accurate, with recovery rate from 89. 8% to 104.3 %. Conclusion The accuracy and precision of this method could meet related standards well, with simple procedure, rapid detection and low cost, and worth for widespread application.%目的 建立并评价用于全血血铅检测的微分电位溶出法.方法 按(下称)的要求对该方法进行评价.结果微分电位溶出法检测血铅线性范围为0~10 μg/L,相关系数为0.999 6,检出限为0.2 μg/L,变异系数小于4%,标准物质检测结果准确,加标回收率89.8%~104.3%.结论 微分电位溶出法操作简单,检测快捷,准确度和精密度均符合要求,且检测成本低廉,值得广泛推广应用.