Surface-Assisted Laser Desorption/Ionization of Metal Complexes with Dithizone

IF 1 4区 化学 Q4 CHEMISTRY, ANALYTICAL Journal of Analytical Chemistry Pub Date : 2024-11-01 DOI:10.1134/S1061934824700989
A. S. Borodkov, Ya. I. Simakina, A. A. Grechnikov
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Abstract

Complex compounds of Cu, Ag, Pd, Pt, and Au with dithizone (diphenylthiocarbazone) were studied by surface-assisted laser desorption/ionization from nanocrystalline silicon. The study demonstrated that all investigated complexes ionize efficiently in the negative ion mode, forming molecular ions and one or more types of fragment ions. The limits of detection for the metal dithizonates were determined. A possibility of coupling laser desorption/ionization mass spectrometry with single drop microextraction for metal detection was explored. Factors affecting the concentration factor were examined, and the optimal conditions for performing single drop microextraction in gold determination were found. The limit of detection for gold is 5 pg/mL.

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表面辅助激光解吸/电离二硫酮金属配合物
通过表面辅助激光解吸/电离纳米晶硅,研究了铜、银、钯、铂和金与二硫酮(二苯基硫代咔唑酮)的络合物。研究表明,所有被研究的复合物都能在负离子模式下高效电离,形成分子离子和一种或多种碎片离子。确定了金属二硫杂酸盐的检测限。探讨了将激光解吸/电离质谱法与单滴微萃取法结合起来进行金属检测的可能性。研究了影响浓度因子的因素,并找到了在测定金时进行单滴微萃取的最佳条件。金的检测限为 5 pg/mL。
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来源期刊
Journal of Analytical Chemistry
Journal of Analytical Chemistry 化学-分析化学
CiteScore
2.10
自引率
9.10%
发文量
146
审稿时长
13 months
期刊介绍: The Journal of Analytical Chemistry is an international peer reviewed journal that covers theoretical and applied aspects of analytical chemistry; it informs the reader about new achievements in analytical methods, instruments and reagents. Ample space is devoted to problems arising in the analysis of vital media such as water and air. Consideration is given to the detection and determination of metal ions, anions, and various organic substances. The journal welcomes manuscripts from all countries in the English or Russian language.
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