PMID- 24566970 OWN - NLM STAT- MEDLINE DCOM- 20150506 LR - 20211021 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 21 IP - 11 DP - 2014 TI - Determination of picogram quantities of chlortoluron in soil samples by luminol-chitosan chemiluminescence system. PG - 7204-10 LID - 10.1007/s11356-014-2646-9 [doi] AB - Based on the enhancing effect of chitosan (CS) on luminol-dissolved oxygen chemiluminescence (CL) reaction, a flow injection (FI) luminol-CS CL system was established. It was found that the increase of CL intensity was proportional to the concentrations of CS ranging from 0.7 to 10.0 mumol l(-1). In the presence of chlortoluron (CTU), the CL intensity of luminol-CS system could be obviously inhibited and the decrements of CL intensity were linearly proportional to the logarithm of CTU concentrations ranging from 0.01 to 70.0 ng ml(-1), giving the limit of detection 3.0 pg ml(-1) (3sigma). At a flow rate of 2.0 ml min(-1), the whole process including sampling and washing could be accomplished within 36 s, offering a sample throughput of 100 h(-1). The proposed FI-CL method was successfully applied to the determination of CTU in soil samples with recoveries ranging from 95.0 % to 105.3 % and the relative standard deviations (RSDs) of less than 4.0 %. FAU - Li, Yajuan AU - Li Y AD - Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, 710069, Xi'an, China. FAU - Zhang, Jingjing AU - Zhang J FAU - Xiong, Xunyu AU - Xiong X FAU - Luo, Kai AU - Luo K FAU - Guo, Jie AU - Guo J FAU - Shen, Minxia AU - Shen M FAU - Wang, Jiajia AU - Wang J FAU - Song, Zhenghua AU - Song Z LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140226 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Phenylurea Compounds) RN - 0 (Soil Pollutants) RN - 5EXP385Q4F (Luminol) RN - 9012-76-4 (Chitosan) RN - SUW8L8G38A (chlortoluron) SB - IM MH - Chitosan/*chemistry MH - Hydrogen-Ion Concentration MH - Limit of Detection MH - Luminescent Measurements/instrumentation/*methods MH - Luminol/*chemistry MH - Phenylurea Compounds/*analysis MH - Reproducibility of Results MH - Soil Pollutants/*analysis EDAT- 2014/02/26 06:00 MHDA- 2015/05/07 06:00 CRDT- 2014/02/26 06:00 PHST- 2013/11/20 00:00 [received] PHST- 2014/02/10 00:00 [accepted] PHST- 2014/02/26 06:00 [entrez] PHST- 2014/02/26 06:00 [pubmed] PHST- 2015/05/07 06:00 [medline] AID - 10.1007/s11356-014-2646-9 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2014;21(11):7204-10. doi: 10.1007/s11356-014-2646-9. Epub 2014 Feb 26.