Solid-Phase Extraction of Carbofuran, Atrazine, Simazine, Alachlor, and Cyanazine from Shallow Well Water

1990 ◽  
Vol 73 (3) ◽  
pp. 438-442 ◽  
Author(s):  
Ralph G Nash
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Detection Limits ◽  
Geological Survey ◽  
Well Water ◽  
Phase Extraction

Abstract Extraction of several nitrogen-containing pesticides from water on solid-phase C18 cartridges was rapid and accurate. One analyst can extract >48 samples/day. Recovery efficiencies were 77, 95, 92, 90, and 99% with detection limits of 0.20, 0.05, 0.05, 0.20, and 0.10 /μg/L for carbofuran, atrazine, simazine, alachlor, and, cyanazine, respectively. Extraction of the atrazine and simazine dealkylation products (deethylatrazlne and deethylsimazine) was less efficient, e.g., 26 and 9%, respectively. Comparisons with 10 U.S. Geological Survey samples gave similar results

scholarly journals Solid-phase extraction of carbaryl and malathion from pond and well water

1991 ◽  
Vol 10 (11) ◽  
pp. 1425-1429 ◽  
Author(s):  
Daniel W. Beyers ◽  
Clarence A. Carlson ◽  
John D. Tessari
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Well Water ◽  
Phase Extraction

scholarly journals Solid-phase extraction of neonicotinoids residue from water: comparison between extraction cartridges

2019 ◽  
Vol 6 (2) ◽  
pp. 84-89
Author(s):  
Gorica Vuković ◽  
Vojislava Bursić ◽  
Nikola Puvača ◽  
Tijana Stojanović ◽  
Bojan Konstantinović ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
Water Policy ◽  
Solid Phase ◽  
Detection Limits ◽  
Phase Extraction ◽  
Acceptable Method ◽  
Watch List

The Commission Implementing Decision (EU) 2018/840 established the watch list of substances for Union-wide monitoring in the field of water policy pursuant to Directive 2008/105/EC and Commission Implementing Decision (EU) 2015/495. This Decision establishes additional substances and their maximum acceptable method detection limits including neonicotinoids (9-500 ng/L). During the pesticides extraction from water, the solid-phase extraction (SPE) column was used. Bakerbond spe™ SDB-1 SPE and Bond Elut Plexa were evaluated for the SPE of neonicotinoids (imidacloprid, thiamethoxam, acetamiprid, thiacloprid and clothianidin) from water. The comparation of the results of these two types of columns, was performed by spiking water samples at two levels (0.05 and 0.1 μg/L) in three replicates. The Bakerbond™ column quantitatively adsorbed these pesticides, with the obtained recoveries: 36.9 % for imidacloprid, 43.2 % for thiacloprid, 119.3 % for clothianidin, 64.6 % for acetamiprid and 53.6 % for thiamethoxam. Using Bond Elut Plexa the obtained recoveries were 66.9 % for imidacloprid, 72.9% for thiacloprid, 103.4 % for clothianidin, 67.4 % for acetamiprid and 45.2% for thiamethoxam. Both colums have low recovery values for thiametoxam, while the highest values were obtained by Bond Elut Plexa for thiacloprid, imidacloprid and acetamiprid. Great recoveries were achieved for clothianidin using both SPE columns.

scholarly journals Development and optimization of a method for the determination of simazine, atrazine and propazine using solid-phase extraction and HPLC/GC

2001 ◽  
Vol 66 (3) ◽  
pp. 199-204 ◽  
Author(s):  
Vera Trajkovska ◽  
Simka Petrovska-Jovanovic ◽  
Mirko Cvetkovski
Keyword(s):  
Solid Phase Extraction ◽  
Simultaneous Determination ◽  
Water Samples ◽  
Solid Phase ◽  
Detection Limits ◽  
Phase Extraction ◽  
Standard Curve ◽  
Spe Method

Asolid-phase extraction (SPE) method, coupled with HPLC/DAD and GC/FID analysis has been developed for the simultaneous determination of simazine, atrazine and propazine in water samples. The compounds of interest were enriched on Envi-carb SPE tubes. The recoveries for simazine, atrazine and propazine from spiked Nanopure water were 101 5.6 %, 99 4.9 % and 96 5.7 %, respectively. The detection limits were 4.00, 8.00 and 10.00 ng absolute samplemass in the column for simazine, atrazine and propazine, respectively. Standard curve r2 values of 0.9828-0.9988 for the analyzed compounds were consistently obtained.

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