Simultaneous UV and electrochemical determination of the herbicide asulam in tap water samples by micellar electrokinetic capillary chromatography

Automated determination of asulam by enhanced chemiluminescence using luminol/peroxidase system

“…Enhancement of the base reaction by means of asulam is a novel method for a procedure for the determination of asulam by an automated method using standard instrumentation. [28] Tap water 10 μg/mL 86 6.50 MECK-UV detection [29] Tap water 10 μg/mL 88 5.80 MECK-electrochemical detection [24] Tap water 0.04 ng 90-118 1.13 HPLC with derivatization [25] Natural water 10.9 μg/mL 98 <5.3 CE-UV detection [27] Natural water 0.9 μg/mL 99 <6.5 CE-electrochemical detection [27] Water Samples 40 μg/mL -4.1 Photochemiluminometric [22] Water Samples 5 μg/mL -1 FIA-fluorescence [21] Soil 1 mg/mL --TLC [26] Peaches 0.043 μg/mL 85-106 1.6 Synchronous fluorescence with derivatization [23] …”

“…The current guideline value for asulam in drinking waters is 0.1 μg/L, [19] justifying the development of suitable analytical methods. Asulam has been determined in several matrices by fluorescence [20] and photo-CL [21] determination using flow injections systems, derivatization methods, [22] UV and electrochemical detection, [23] HPLCfluorescence, [24] thin-layer chromatography [25] and electrophoretic detection. [26] In a previous paper [27] a stopped flow chemiluminescence determination of asulam, based on its inhibition action over the system luminol-H 2 O 2 -HRP in the first instants of the reaction, has been proposed.…”

Ionic liquid based microextraction combined with derivatization for efficient enrichment/determination of asulam and sulfide

“…Compared with the presented asulam determination method, the methods in Table 5 show some disadvantages in the limit of detection, 1,4,5,7,8,12,37 linear dynamic range [3][4][5]10 , and the range of the sample analyzed. [1][2][3][4][5][6][7][8][9][10]12,37 Moreover, the analytical characteristics of the presented sulfide determination method were compared with the others as shown in Table 6. Compared with the presented sulfide enrichment/determination method, the others show some limitations in the limit of detection, 19,20,38−44 linear dynamic range, 20,42 and the range of the sample analyzed.…”

Fluorescence Determination of the Pesticide Asulam by Flow Injection Analysis

“…17,18 Other authors have investigated isotachophoresis along with conductimetric or UV-vis detection 19 or micellar electrokinetic capillary chromatography. 20 For complex matrices, combinations of these methods have been employed: one of them for the sample pretreatment; preparative capillary isotachophoresis for humic matrices 21 and HPLC; or, sample pretreatment for soil samples followed by capillary electrophoresis. 22 Other non-separation procedures have been published for Asulam determination.…”