Cookies

Like most websites The Analytical Scientist uses cookies. In order to deliver a personalized, responsive service and to improve the site, we remember and store information about how you use it. Learn more.

Detecting Trace Herbicides in Water Samples by SPE Sample Preparation and GC-MS

Abstract

CDS Empore™ SDB-XC SPE cartridges help to extract trace herbicides in water samples by eliminating methylene chloride and greatly reducing organic solvent usage in elution.

Introduction

Organic contaminants are a concern in rivers, streams, and ground water across the whole world. Each year, millions of dollars have been spent to analyze these organic contaminants such as phenols, benzidines, phthalate esters, nitrosamines, organochlorine pesticides, nitroaromatics, polynuclear aromatic hydrocarbons, haloethers, chlorinated hydrocarbons, and acid-base neutrals. Normally chlorinated solvents are required to extract these contaminants from water samples. Although the methylene chloride needed per water sample is reduced from 150 mL in EPA Method 625,1 to 15 mL in EPA Method 525,2 the yearly consumption of methylene chloride for organic contaminant analysis is still as much as 5 to 10 million liters. Methylene chloride can remove ozone from the upper atmosphere and is also a suspected carcinogen. Therefore, the demand to minimize or eliminate the usages of methylene chloride in this analysis is desired.

In this application note, a 15 mL water sample is passed through a 4mm/ 1mL Empore™ SDB-XC Disk SPE cartridge (Cat. #: 4140HD), and eluted with 50 μL ethyl acetate. The extract was then analyzed by GC-MS. The accuracy and precision for the recoveries of 18 analytical standards are determined from the five-point calibration curve of each standard. The validation data presented herein was determined on three replicate measurements for each sample from the same lot of SDB-XC Disk SPE cartridge. MDLs were also determined as part of this validation.

Read the full article now

Log in or register to read this article in full and gain access to The Analytical Scientist’s entire content archive. It’s FREE!

Login
Receive content, products, events as well as relevant industry updates from The Analytical Scientist and its sponsors.

When you click “Subscribe” we will email you a link, which you must click to verify the email address above and activate your subscription. If you do not receive this email, please contact us at [email protected].
If you wish to unsubscribe, you can update your preferences at any point.

Related Application Notes
Hard seltzer analysis using high-capacity sorptive extraction with GC

| Contributed by Markes International Ltd

PFAS analysis in air using cryogen-free thermal desorption and GC–MS

| Contributed by Markes International Ltd

Improved characterisation of malodours in recycled plastics using TD–GC×GC with BenchTOF2 MS

| Contributed by SepSolve Analytical

Related Webinars
Techniques & Tools Spectroscopy
The Analytical Spectroscopy Technology Forum

| Sponsored by WITec GmbH, Bruker Optics, Hamamatsu Photonics Europe GmbH, and DRS Daylight Solutions

Techniques & Tools Liquid Chromatography
The Next-Level LC-MS Technology Forum

| Sponsored by ACD Labs, Agilent, Tosoh and Andrew Alliance (Waters)

Techniques & Tools Liquid Chromatography
The Extreme HPLC Technology Forum

| Sponsored by Pall, Phenomenex, SilcoTek and VICI

Register to The Analytical Scientist

Register to access our FREE online portfolio, request the magazine in print and manage your preferences.

You will benefit from:
  • Unlimited access to ALL articles
  • News, interviews & opinions from leading industry experts
  • Receive print (and PDF) copies of The Analytical Scientist magazine

Register