Monitoring of environmental parameters by sequential injection analysis

Cerdà, Vı́ctor; Cerdà, Amalia; Cladera, A.; Oms, M.T.; Más, F.; Gómez, E.; Bauzá, F; Miró, Manuel; Forteza, R.; Estela, José Manuel

doi:10.1016/s0165-9936(01)00064-4

Cited by 42 publications

(14 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The practical advantages and drawbacks of the sequential injection analysis compared to flow injection analysis were discussed in detail by the group of Cerda [12]. They mentioned robustness, easy sample handling, multi-parametric determinations, versatile manifold, easy implementation of stop-flow technique and lower consumption of reagents and samples in case of the SIA determinations and also lower waste production.…”

Section: Introductionmentioning

confidence: 99%

An automated method for monitoring aluminum in water samples based on a sequential injection platform

et al. 2015

View full text Add to dashboard Cite

The simple colour reaction between aluminum(III) and aluminon reagent was transferred to the automated sequential injection system. The experimental conditions were optimized in detail and found to be: sample pH, 4; zone sequences, aluminon-sample-HCl-aluminon; sample volume, 50 µL; volume of 1 M HCl, 5 µL; volume of reagent, 25 µL. The interference caused by iron was eliminated by addition of thioglycolic acid. Calibration plot was linear over the range of 100-800 µg L -1 Al(III) with limits of detection and quantitation 13.0 and 43.3 µg L -1 , respectively. Sample throughput was 36 samples per hour. The RSD values for repeatability tested on 200 and 600 µg L -1 Al(III) levels were found in the range of 1.97-2.36% and 1.69-2.57%, respectively. Nine real samples of well and pond water were examined and results corresponded well with the commercially available colour test based on chromazurol reaction. Recovery based on standard addition method ranged from 100.00 to 103.41%. The developed method is intended to by applied for quick screening of Al(III) content using fully automated technique based on the sequential injection system.

show abstract

Section: Introductionmentioning

confidence: 99%

An automated method for monitoring aluminum in water samples based on a sequential injection platform

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Several methods based on SIA have been developed for the determination of key environmental parameters with different detection systems [19]. In this chapter, several automatic monitoring systems based on SIA for water and wastewater quality determination are presented and discussed in detail.…”

Section: Introductionmentioning

confidence: 99%

Automatic Water and Wastewater Quality Monitoring Systems

Cerdà

Avivar

Ferrer

et al. 2013

Smart Sensors, Measurement and Instrumentation

View full text Add to dashboard Cite

Abstract.Water and wastewater quality monitoring programs have to be established in order to fulfill current legal requirements as well as environmental and social concerns. This entails a large number of samples to be analyzed in a short period of time. Flow analysis techniques allow the automation of the analytical methodologies providing great advantages, i.e. improved reproducibility, low reagents consumption and waste generation, as well as high analysis frequency. Sequential Injection Analysis (SIA) is an excellent tool for developing automatic analyzers with multiparametric capabilities. In this chapter, four multiparametric SIA systems which are able to determine key parameters in water and wastewater such as BOD, COD, TOC, TSS, global N, total P, nitrate, nitrite, ammonium, orthophosphate, anionic detergents, sulfate, pH and conductivity are presented and discussed in detail.

show abstract

“…2,3 The characteristics of SIA enable automation of diverse operations such as sampling, chemical derivatization, dilution, standard addition and others, improving the reproducibility. Low sample and reagent consumption and small waste generation 4,5 are remarkable features of this technique, following the principles of green chemistry 6 applied to development of clean analytical methods. A typical system is configured in single line by a syringe pump, coupled to a two-way valve that can communicate with the carrier or with a multiport valve through a holding coil where the reaction zone is formed prior to injection toward the detector, placed in another port of the multiport valve, immediately after the reaction coil.…”

Section: Introductionmentioning

confidence: 99%

Development of a fluorimetric sequential injection analysis (SIA) methodology for determination of quinine

Infante

Masini

2011

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Desenvolveu-se uma metodologia de análise por injeção sequencial (SIA) para a determinação fluorimétrica de quinino em refrigerantes. Dispersão mínima e mistura eficiente foram obtidas aspirando-se 200 mL de amostra entre duas zonas de 100 mL de reagente (0,10 mol L -1 H 2 SO 4 ) a uma vazão de 250 mL s -1 , usando uma bobina de reação de 50 cm de comprimento (0,8 mm de diâmetro interno). Resposta linear para concentrações (C) entre 0,050 e 100,0 mg L -1 foi descrita por: I = (532 ± 40) + (2,36 ± 0,04) C, com r = 0.999, onde I é intensidade relativa de fluorescência. Coeficiente de variação e limites de detecção e quantificação foram 1,9% (0,50 mg L -1 , n = 10), 2,3 e 4,5 mg L -1 , respectivamente. A frequência de amostragem foi 60 amostras por hora, consumindo 2,2 mL de H 2 SO 4 concentrado e produzindo 4 mL de resíduos por análise. Não foram observadas diferenças significativas entre os resultados obtidos pela metodologia SIA proposta e aqueles obtidos pelo procedimento em batelada.A sequential injection analysis (SIA) methodology was developed for fluorimetric determination of quinine in soft drinks. Minimum dispersion and efficient mixing were achieved by aspirating 200 mL of sample between two 100 mL reagent zones (0.10 mol L -1 H 2 SO 4 ) at flow rate of 250 mL s -1 and using a reaction coil length of 50 cm (0.8 mm internal diameter). Linear response for quinine concentrations (C) between 0.050 and 100.0 mg L -1 was described by: I = (532 ± 40) + (2.36 ± 0.04) C, with r = 0.999, where I is the relative fluorescence intensity. The coefficient of variation and limits of detection and quantification were 1.9% (0.50 mg L -1 n = 10), 2.3 and 4.5 mg L -1 , respectively. The sampling throughput was 60 analyses per hour, consuming 2.2 mL of concentrated H 2 SO 4 and producing 4 mL of wastes per analysis. No statistically significant differences were observed between the results obtained by the proposed SIA methodology and the ones obtained by the batch procedure.Keywords: sequential injection analysis, quinine, fluorimetry, dispersion, optimization IntroductionSequential injection analysis (SIA) is a robust single channel flow technique widely used to automate analytical determinations and process control. It is based on the measurement of a transient signal resulting from sequential injection of defined sample and reagent volumes in a carrier solution under controlled dispersion. 1 The sample processing conditions can be changed by software control as required by the analytical procedure. The possibility of exploiting feedback mechanisms to change sample processing conditions using a unique physical configuration make these approaches attractive to design flow procedures for process monitoring. 2,3 The characteristics of SIA enable automation of diverse operations such as sampling, chemical derivatization, dilution, standard addition and others, improving the reproducibility. Low sample and reagent consumption and small waste generation 4,5 are remarkable features of this technique, following the principles of g...

show abstract

Monitoring of environmental parameters by sequential injection analysis

Cited by 42 publications

References 51 publications

An automated method for monitoring aluminum in water samples based on a sequential injection platform

An automated method for monitoring aluminum in water samples based on a sequential injection platform

Automatic Water and Wastewater Quality Monitoring Systems

Development of a fluorimetric sequential injection analysis (SIA) methodology for determination of quinine

Contact Info

Product

Resources

About