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Direct Quantification of Diquat and Paraquat in Drinking Water Samples Using Ultra-Sensitive UPLC/MS/MS Analysis

Library Number:
APNT134755733
Part Number:
720004770en
Author(s):
Claude R Mallet
Source:
Waters
Content Type:
Application Notes
Content Subtype:
Application Notes
Related Products:
Environmental
 
Drinking Water
 
Xevo TQ-S
 
ACQUITY UPLC I-Class PLUS System
 
BEH (Ethylene Bridged Hybrid) Technology
 
Pesticides in Water
Abstract / Summary

This application note presents the versatility of direct injection using the ACQUITY I-Class UPLC System with the Xevo TQ-S Mass Spectrometer for the analysis of diquat and paraquat in tap water and bottled water. The limit of detection in this study was 50 ppt, which is below the European Union Directive LOD of 100 ppt. The high sensitivity of Xevo TQ-S enabled excellent quantitation using a 100-μL injection without sample extraction or concentration prior injection. The recovery data showed good results with excellent RSD’s below 8% for both water samples.


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