Improving the Detectability of Sequential Injection Chromatography (SIC): Determination of Triazines by Exploiting Liquid Core Waveguide (LCW) Detection

Infante, Carlos M. C.; Urio, Ricardo de Prá; Masini, Jorge C.

doi:10.1080/00032719.2010.500787

Cited by 11 publications

(9 citation statements)

References 20 publications

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“…The use of short MCs in SIC also contributes to the reduction of consumed volumes of mobile phase. As shown in Table 2, the waste production in SIC methods were in the range of 2.21-5.00 mL with two exceptions, 13.20 mL (Infante et al, 2011) and 11.53 mL (Elgorashe et al, in print). These volumes included the consumed volumes of mobile phase for both column conditioning and separation as well as sample volumes.…”

Section: Analytical Resultsmentioning

confidence: 95%

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The Second Five Years of Sequential Injection Chromatography: Significant Developments in the Technology and Methodologies

Idris

2014

Critical Reviews in Analytical Chemistry

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Sequential injection chromatography was proposed in 2003 to perform a simple, rapid, reagent-saving, environmentally benign, on-site, and instrumentally inexpensive separation procedure. Sequential injection chromatography is a version of sequential injection analysis, which is the second generation in the family of flow injection techniques. Despite its advantages over high-performance liquid chromatography, sequential injection chromatography has confronted some challenges. Furthermore, the applications of sequential injection chromatography in its first five years are almost all limited to pharmaceutical analysis. Interestingly, in its second five years, various developments in sequential injection chromatography technology were achieved. The developments have enhanced the efficiency of sequential injection chromatography and hence its applications have extended to biological, food, and environmental analyses. The main objectives of this review are to examine recent developments (2008-2013) in sequential injection chromatography and to describe how these developments improve the efficiency of the technology. The sequential injection chromatography methodologies reported during that period are also discussed along with controlling conditions and analytical results. The review also describes the principles, instrumentation, and procedure behind sequential injection chromatography.

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Section: Analytical Resultsmentioning

confidence: 95%

“…Those FCs lowered the limit of detection (LOD) for poor UV absorbents compared Schematic diagram of a sequential injection chromatograph constructed for on-line filtration, dilution, and separation.that of a conventional short-distance FC Infante et al (2011). also proposed the use of an FC with a very long path length (100 mm).…”

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confidence: 98%

The Second Five Years of Sequential Injection Chromatography: Significant Developments in the Technology and Methodologies

Idris

2014

Critical Reviews in Analytical Chemistry

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“…The FIAlab 5.1 software synchronized the movements of the syringe pump and the selection valve (Figure ) as well as aquired data from the UV detector. Details on the instrument configuration and mode of operation are described elsewhere. , …”

Section: Methodsmentioning

confidence: 99%

Online Sequential-Injection Chromatography with Stepwise Gradient Elution: A Tool for Studying the Simultaneous Adsorption of Herbicides on Soil and Soil Components

Urio

Infante

Masini

2013

J. Agric. Food Chem.

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The adsorption of triazine herbicides simazine (SIM), atrazine (ATR), and propazine (PRO) as well as the metabolites deisopropylatrazine (DIA), deethylatrazine (DEA), and 2-hydroxyatrazine (HAT) on soil, humic acid, and soil modified with humic acidic was studied by sequential-injection chromatography with UV detection at 223 nm. An online monitoring system was assembled, which was composed of a tangential filter and a peristaltic pump for the circulation of the soil (25 g L(-1)) or humic acid (2.5 g L(-1)) suspensions. A stepwise gradient elution separated the compounds using three mobile phases whose compositions were 28, 40, and 50% (v v(-1)) methanol in 1.25 mmol L(-1) ammonium acetate buffer, pH 4.7. The sampling throughput was about six analyses per hour; the linear dynamic range was between 100 and 1000 μg L(-1) for all of the studied compounds. The detection limits varied from 9 μg L(-1) for ATR to 36 μg L(-1) for DEA. At contact times <2 h, humic acid was the material with a higher adsorptive capacity (from 1470 ± 43 μg g(-1) for DIA to 2380 ± 51 μg g(-1) for PRO). In soil, HAT exhibited the highest adsorption (23.8 ± 0.2 μg g(-1)). The presence of humic acid in the soil increased the adsorption of ATR (14 ± 1 to 23 ± 2 μg g(-1)) and PRO (21.5 ± 0.5 to 24.0 ± 0.2 μg g(-1)), decreased the adsorption of HAT (23.8 ± 0.2 to 18 ± 2 μg g(-1)), and did not affect DIA and DEA. The adsorption of SIM was negligible in all of the sorbents studied. Simazine is the herbicide with the greatest potential for leaching to water bodies followed by DEA and DIA.

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“…Sequential injection chromatography has been mostly applied to pharmaceutical and biological samples [10,11], although some few works have demonstrated its applicability to environmental analysis [12][13][14][15]. Atrazine (AT) and simazine (SIM) are herbicides widely used to stop pre-and post-emergence of broadleaf and grassy weeds in major crops such as sugar cane, maize, soybean and citrus fruits [16].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of sequential injection chromatography for reversed phase separation of triazine herbicides exploiting monolithic and core–shell columns

Urio

Masini

2015

Talanta

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Improving the Detectability of Sequential Injection Chromatography (SIC): Determination of Triazines by Exploiting Liquid Core Waveguide (LCW) Detection

Cited by 11 publications

References 20 publications

The Second Five Years of Sequential Injection Chromatography: Significant Developments in the Technology and Methodologies

The Second Five Years of Sequential Injection Chromatography: Significant Developments in the Technology and Methodologies

Online Sequential-Injection Chromatography with Stepwise Gradient Elution: A Tool for Studying the Simultaneous Adsorption of Herbicides on Soil and Soil Components

Evaluation of sequential injection chromatography for reversed phase separation of triazine herbicides exploiting monolithic and core–shell columns

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