Application of sequential injection-monosegmented flow analysis (SI-MSFA) to spectrophotometric determination of sulfide in simulated waters samples

Development of novel and sensitive methods for the determination of sulfide in aqueous samples by hydrogen sulfide generation-inductively coupled plasma-atomic emission spectroscopy

“…A number of recent developments have led to substantial improvements in sensitivity and detection limits. The combination of methylene blue with flow injection analysis allowed the determination of sulfide at 4.6 g L −1 [11][12][13]. After reaction with sulfide, methylene blue can be detected at nanomolar levels by high performance liquid chromatography or gas chromatography [14,15].…”

Direct determination of phosphate in urine by sequential-injection analysis with single on-line dilution–calibration method and photometric detection

“…Compared to FI, SI is characterized by manifold simplicity, versatility, convenience and speed of calibration, and low consumption of reagents and sample and has been shown to be the most versatile technique, also suitable for automated on-line dilution under nonequilibrium conditions. So far, only a limited number of SI systems for on-line dilution have been reported [12][13][14][15][16][17][18][19][20]. Among them, the single standard calibration and dilution method employing a dilution conduit for creating a concentration gradient of the injected analyte zone seems to be the most attractive and efficient [12].…”

A análise por injeção sequencial (SIA): vinte anos em uma perspectiva brasileira

“…17 A determinação de carbaryl em água 21 visou a comparação entre sistemas de multicomutação, amostragem binária 78 e SIA, através de figuras de mérito como limite de detecção, frequência de amostragem e consumo de reagentes. O uso de preparações aquosas foi empregado por Silva et al 43 para a determinação de S 2-em fluxo monossegmentado; posteriormente, Silva e Masini 49 propuseram e aplicaram uma cela de difusão gasosa para a determinação deste mesmo analito. Aproveitando-se da frequência de amostragem superior dos métodos em fluxo frente a trabalhos em batelada, Abate et al 59 realizaram estudos de monitoramento da adsorção de ácido fúlvico em vermiculita modificada.…”