Stabilization of sulfide and sulfite and ion-pair chromatography of mixtures of sulfide, sulfite, sulfate and thiosulfate

Miura, Yasuyuki; Matsushita, Yohsuke; Haddad, Paul R.

doi:10.1016/j.chroma.2005.02.010

Cited by 29 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The method is specific, thus thiosulfate could be detected without any interference from coexisting substances. The overall analysis time (about 16 min) for this method was shorten than previously reported for hot spring water (32 min) , Kraft black liquors (25 min) and wines (25 min) , similar to reported for water from meromictic lake (18 min) , groundwater (18 min) and real extracts from post‐blast residues (16 min) , but worse than for thiosulfates in water from an open‐pit mining lake (6 min) , human urine (9 min) , Kraft pulping liquors (6.5 min) , and spent fixing solutions (4 min) .…”

Section: Resultssupporting

confidence: 78%

See 1 more Smart Citation

Fast and simple MEKC sweeping method for determination of thiosulfate in urine

2015

View full text Add to dashboard Cite

A new method for determination of thiosulfate in human urine has been developed and validated. Analytical procedure is very simple and consists of only few steps: derivatization of thiosulfate with 2-chloro-1-methylquinolinium tetrafluoroborate, centrifugation of a mixture, separation of so-formed derivative by micellar electrokinetic chromatography with sweeping and UV detection at 375 nm. A fused-silica capillary with an inlet to detector length of 51.5 cm and a total length of 60 cm (75 μm id) was served as a separation column. The separation voltage of 20.5 kV (∼160 mA) and buffer solution consisting of 0.055 mol/L sodium phosphate (pH 8), 25% acetonitrile, and 0.035 mol/L sodium dodecyl sulfate were found to be the most suitable conditions for the effective separation. The limit of quantification for thiosulfate was 4 μmol/L urine. The method was validated and calibrated for thiosulfate in the range of 4-64 μmol/L (R(2) = 0.9997). The relative standard deviation of the points of the calibration curve varied from 1.2 to 4.8% RSD.

show abstract

Section: Resultssupporting

confidence: 78%

“…Unfortunately, these methods were often limited by poor sensitivity. Different methods were used for the measurement and detection of thiosulfate including HPLC , ion chromatography , ion‐exclusion chromatography , and gas chromatography .…”

Section: Introductionmentioning

confidence: 99%

Fast and simple MEKC sweeping method for determination of thiosulfate in urine

2015

View full text Add to dashboard Cite

show abstract

“…According to the existing literature, the typical concentration range of sulfide in hot spring waters and wastewaters are 9-440 μM [4]- [8] and 2-4750 μM [9]- [13], respectively. These levels of sulfide concentration can be determined by a number of analytical techniques, such as iodimetric [12], [14], spectrophotometric [15]- [22], chromatographic [23], [24], capillary electrophoretic [25], and electrochemical methods [13], [26]- [31].…”

Section: H Ydrogen Sulfide (H 2 S) Is a Hazardous And Toxicmentioning

confidence: 99%

A Selective and Sensitive Sensor for Determination of Sulfide in Aquatic Environment

Safavi

Abi

2015

IEEE Sensors J.

View full text Add to dashboard Cite

A cost-effective, sensitive, and selective electrochemical sensor for the analysis of sulfide based on the high affinity of sulfide to metallic silver is proposed. To achieve high sensitivity while lowering the cost of the sensor, silver nanoparticles (Ag NPs), which possess larger metal surface area-to-volume ratio compared with bulk silver, were employed for the development of the sensor. The sensor was prepared through electrodeposition of Ag NPs on the surface of a carbon ionic liquid electrode using potentiostatic double-pulse technique, and it showed a wide linear range from 25 to 2500 µM of sulfide with a detection limit of 6.02 µM. Since the analysis of sulfide was performed at a remarkably low detection potential, the presented sensor offered high selectivity against common interferents and was successfully applied to the analysis of sulfide in a hot spring water sample.Index Terms-Carbon ionic liquid electrode, double-pulse technique, silver nanoparticles, sulfide sensor.

show abstract

“…Besides classical gravimetry and turbidimetry, the common methods for determination of SO 4 2À are potentiometry [1][2][3] and ion chromatography [4][5][6][7][8][9]. However, these techniques have certain drawbacks such as the large volume of a sample, the high consumption of chemicals, the poor selectivity in some cases, the long elution times, and the high operational cost.…”

Section: Introductionmentioning

confidence: 99%