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流动注射化学发光分析法应用研究进展 总被引:1,自引:0,他引:1
本文对流动注射进样方式和化学发光相结合的分析方法与传统分析方法进行比较,综述了国内外对药物、有机和无机物环境样品的应用研究进展,并展望了流动注射化学发光分析法的应用前景。 相似文献
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流动注射化学发光法测定杀菌剂代森锌的含量 总被引:1,自引:0,他引:1
在碱性条件下,N-溴代丁二酰亚胺(NBS)直接氧化代森锌产生强烈的化学发光信号,结合流动注射技术,建立了测定杀菌剂代森锌含量的流动注射化学发光分析法。试验研究了影响化学发光信号强度的各种因素。方法的测定线性范围为9.0×10-7 ̄7.0×10-4g/ml,检出限(3σ)为3×10-7g/ml。对9.0×10-6g/ml的代森锌进行11次平行测定,相对标准偏差为3.6%。将该法用于实际农药样品分析,结果令人满意。 相似文献
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本文介绍了流动注射化学发光分析法测定水样中痕量铬(Ⅵ)的新方法。关于液相化学发光分析的研究和应用在我国已初步开展,是一种高灵敏度的分析方法。但在无机物的分析方面限制很大,一个重要原因是能产生化学发光的物质不多,因此仅有少数无机离子能够利用这类方法测定,而铬(Ⅵ)就是其中的一种离子。本实验用鲁米诺作为化学发光 相似文献
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流动注射化学发光技术在农药残留检测中的应用 总被引:1,自引:0,他引:1
简述了流动注射化学发光技术的基本原理、实验装置及其与免疫分析、高效液相色谱、固相光谱、红外等分析技术联用在农药残留检测方面的应用。讨论了流动注射化学发光技术存在的问题和发展趋势。指出这种新型有效的自动微量化分析技术在食品和环境中的农药残留检测方面已经取得了一定进展,但还存在一些问题需要不断改进。 相似文献
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研究发现,铁(Ⅲ)与过氧化氢在酸性条件下生成羟自由基(·OH),羟自由基(·OH)和罗丹明6G(Rh6G)混合可以产生微弱的化学发光,抗坏血酸可以增敏其微弱化学发光,结合流动注射技术,建立了一种新的抗坏血酸化学发光分析法.增敏的化学发光强度与2.0×10-6~8.0×10-4 mg/mL范围内的抗坏血酸呈良好线性,检出限为1×10-6 mg/mL(3σ),对5.0×10-5mg/mL的抗坏血酸平行测定11次,其相对标准偏差为3.1%.文章最后对其反应的可能机理进行了探讨. 相似文献
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基于高铁酸盐可以氧化鲁米诺发光的特性,建立了一种新型、快速、环境友好的在线监测高铁酸盐稳定性的方法———流动注射—化学发光分析法。研究了温度、溶液pH值、添加剂对高铁酸盐稳定性的影响,结果表明,低温和高碱度是保持高铁酸盐溶液稳定的关键因素,硅酸钠作为添加剂有助于提高高铁酸盐的产率和稳定性。 相似文献
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在盐酸介质下研究黄芩苷与甲醛和高锰酸钾的化学发光行为、影响化学发光强度的诸因素,据此建立了流动注射化学发光法检测黄芩苷的新方法。在优化的实验条件下,本法测定黄芩苷的线性范围为3.0×10-8~3.0×10-6g/mL;检出限为2.5×10-8g/mL;对浓度为5.0×10-8g/mL的黄芩苷连续11次测定,其相对标准偏差为3.0%。该方法应用于黄芩苷含量测定,结果与中国药典法相吻合。 相似文献
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It has been found that sodium hypochlorite enhanced the chemiluminescence (CL) of the CdTe nanocrystal (NC)-hydrogen peroxide system and that estrogens inhibited these CL signals in alkaline solution. CL spectra were used to investigate the mechanism of the CL enhancement. On the basis of the inhibition, a flow-injection CL method has been established for determination of three natural estrogens. 相似文献
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文章综述了流动注射分析方法的原理和分类,并从水质、大气和土壤等方面介绍了它在环境监测中的应用,最后展望了未来的发展趋势。 相似文献
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Bertrand W. Mathäus 《Journal of the American Oil Chemists' Society》1996,73(8):1039-1043
The oxidative stability of five different oils was determined by Rancimat analysis with conductivity and chemiluminescence
measurements for evaluation of the induction periods. Samples of oil, taken at intervals from the Rancimat apparatus, were
used for chemiluminescence measurements. The chemiluminescence results were plotted vs. time, and the resulting curves were
evaluated with a graphical tangential procedure in the same way as the curves of the Rancimat method (conductivity measurement).
Induction periods of the oils assessed by Rancimat and chemiluminescence methods showed a significant linear correlation (r=0.9865). The temperature dependence of the induction periods evaluated by chemiluminescence and by conductivity was investigated
with walnut oil. A marked temperature dependence was observed for both. 相似文献
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The applicability of a single-channel flow-injection system with
immobilized enzyme coil (Technicon) and UV detection to the
determination of glucose is described. The method was used for a
pure glucose solution and for serum. The detection limit was 0.10
mM, the rate of determination was 20-40 per hour and the
precision was satisfactory. The system is very simple and practical
when many analysis are to be determined periodically. 相似文献
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J. Ruz F. Lázaro M. D. Luque de Castro 《Journal of Automated Methods and Management in Chemistry》1988,10(1):15-19
An overview of the use of immobilized enzymes in flow-injection analysis (FIA) is presented. The joint use of FIA and immobilized enzymes means that analytical procedures are easily automated, analytical costs are reduced and methods are faster. The future possibilities for this combination are discussed. 相似文献
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S. E. Birnie 《Journal of Automated Methods and Management in Chemistry》1988,10(3):140-143
An automated continuous monitoring system for the determination of inorganic and total mercury by flow-injection analysis followed by cold-vapour atomic absorption spectrometry is described. The method uses a typical flow-injection manifold where digestion and reduction of the injected sample takes place. Mercury is removed by aeration from the flowing stream in a specially designed air-liquid separator and swept into a silica cell for absorption measurement at a wavelength of 253.7 nm. A calibration curve up to 10 μg Hg ml-1 using three different path length cells is obtained with a detection limit of 0.02 μg Hg ml-1. The sampling rate of an injection every 3 min produces 20 results per hour from a flowing stream. 相似文献
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通过对酸性介质中对苯二胺抑制Na2CO3-NaNO2-H2O2体系的化学发光进行研究,建立了一种流动注射-抑制化学发光测定染发剂中对苯二胺的方法。实验结果表明,在所选择的优化条件下,对苯二胺溶液的质量浓度与化学发光强度的降低值呈良好的线性关系,对质量浓度为1.0×10-4 g.L-1的对苯二胺溶液进行11次平行测定的相对标准偏差为0.58%,检出限为1.5×10-7 g.L-1。 相似文献