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你好，我们现在正在用三重四级杆的LC-MS做草甘膦，灵敏度非常地低，请问下你们这个方法可以用在四级杆质谱吗？离子对是什么呢？万分感谢！原文由 kylabs(kylabs) 发表:
不需要衍生的LCMS方法：
Method Conditions
Column Cogent Diamond Hydride™, 4µm, 100A （Microsolv公司） Catalog No. 70000-15P-2 Dimensions 2.1 x 150 mm Solvents A: DI water + 5 mM ammonium acetate
B: 90% acetonitrile/10% DI water/10 mM ammonium acetateGradient 0.0 min � 80.0%B
1 .0 min 80%B
1.1 min to 5%B
5.0 min 5%B
6.0 min to 80%BPost time 5 min Flow rate 0.5 mL/min. Sample Prep Glyphosate: 168.0067m/z (M - H)-
Figure A: injection #1, RT = 3.365 min
Figure B: injection #5, RT = 3.366 min
Sample stock solution was purchased from Sigma (1000 mcg/mL). Sample
for analysis was made by diluting the stock 1:100 in 30:70 solution A and B.Detection ESI � neg - Agilent 6210 MSD TOF mass spectrometer.
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