TY - JOUR
T1 - Analysis of the plant growth regulator chlormequat in soil and water by means of liquid chromatography-tandem mass spectrometry, pressurised liquid extraction, and solid-phase extraction
AU - Henriksen, Trine
AU - Juhler, René K.
AU - Brandt, Gyrite
AU - Kjær, Jeanne
PY - 2009/3/20
Y1 - 2009/3/20
N2 - We present a new, precise and accurate method for quantitative analysis of chlormequat in soil and aqueous matrices. The method, which is based on LC-MS/MS, pressurised liquid extraction and solid-phase extraction, is eminently suitable for studying the fate of chlormequat in the soil environment. The limit of detection is 0.003-0.008 μg/L for rainwater, surface water and groundwater and 0.07-0.4 μg/kg for soil. In water samples amended to 0.04 μg/L, precision is better than 10%. The residual content of chlormequat in three agricultural topsoils analysed 4 months after its application was 23-55 μg/kg (12-23% of the amount applied). No trace of chlormequat was detected in groundwater from 66 water supply wells located in rural areas treated with chlormequat.
AB - We present a new, precise and accurate method for quantitative analysis of chlormequat in soil and aqueous matrices. The method, which is based on LC-MS/MS, pressurised liquid extraction and solid-phase extraction, is eminently suitable for studying the fate of chlormequat in the soil environment. The limit of detection is 0.003-0.008 μg/L for rainwater, surface water and groundwater and 0.07-0.4 μg/kg for soil. In water samples amended to 0.04 μg/L, precision is better than 10%. The residual content of chlormequat in three agricultural topsoils analysed 4 months after its application was 23-55 μg/kg (12-23% of the amount applied). No trace of chlormequat was detected in groundwater from 66 water supply wells located in rural areas treated with chlormequat.
KW - Chlormequat-chloride
KW - Chlorocholine chloride
KW - Groundwater
KW - Pressurised liquid extraction
KW - Quaternary ammonium herbicides
UR - http://www.scopus.com/inward/record.url?scp=60649110697&partnerID=8YFLogxK
U2 - 10.1016/j.chroma.2009.01.050
DO - 10.1016/j.chroma.2009.01.050
M3 - Article
VL - 1216
SP - 2504
EP - 2510
JO - Journal of Chromatography A
JF - Journal of Chromatography A
SN - 0021-9673
IS - 12
ER -