A comparative study of laser spray and electrospray
A comparative study of laser spray and electrospray
复制标题
激光喷涂与电喷涂的对比研究
DOI：
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发表时间：
2000
影响因子：
2
通讯作者：
K. Hiraoka
中科院分区：
文献类型：
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作者：
Ichiro Kudaka;T. Kojima;Shinpei Saito;K. Hiraoka
从各个方面对电喷雾和激光喷雾进行了比较研究。一般来说，当样品浓度</=10(-5)M时，激光喷雾的离子信号强于电喷雾。对于精氨酸水溶液，激光喷雾比电喷雾能观察到n较大的簇离子H(+)（精氨酸）(n)的离子强度。这可能是由于激光照射使从不锈钢毛细管中流出的样品溶液的半月板中的溶剂选择性汽化，从而使样品浓度富集。对于10(-5)M Arg-Lys-Arg-Ala-Arg-Lys-Glu的H(2)O/CH(3)OH （1:1, v/v）溶液，激光喷雾的离子信号比电喷雾强，其中激光喷雾的离子最高为[M + 4H](4+)，电喷雾的离子最高为[M + 5H]（5+）。激光喷雾是最适合分析水溶液的方法。版权所有2000约翰威利父子有限公司
A comparative study of electrospray and laser spray has been undertaken from various aspects. In general, laser spray gave stronger ion signals than electrospray, for solutions with the sample concentration of </=10(-5)M. For an aqueous solution of arginine, ion intensities of the cluster ions H(+)(arginine)(n) with larger n were observed by laser spray than by electrospray. This may be due to the enrichment of the sample concentration by the selective vaporization of the solvent from the meniscus of the sample solution effusing out of the stainless steel capillary by the laser irradiation. For an H(2)O/CH(3)OH (1:1, v/v) solution of 10(-5) M Arg-Lys-Arg-Ala-Arg-Lys-Glu, laser spray gave stronger ion signals than electrospray while the most highly charged ion observed was [M + 4H](4+) for laser spray and [M + 5H](5+) for electrospray. Laser spray was found to be the most suitable for the analyses of aqueous solutions. Copyright 2000 John Wiley & Sons, Ltd.