Spectrophotometric Determination of Low Levels of the Orthophosphate Anion as Molybdenum Blue using Sodium Thiosulphate Reducing agent

Simple item page
dc.contributor.authorNalumansi, Irene
dc.contributor.authorBirungi, Grace
dc.contributor.authorMoodley, Brenda
dc.contributor.authorTebandeke, Emmanuel
dc.date.accessioned2022-12-29T11:35:53Z
dc.date.available2022-12-29T11:35:53Z
dc.date.issued2020
dc.description.abstractA simple spectrophotometric method for the determination of low levels of the orthophosphate (PO4 3-) in environmental water systems is reported. The method is based the formation of the phosphomolybdate from the condensation of molybdate and orthophosphate in aqueous acid medium followed by reduction with sodium thiosulphate to form phosphomolybdenum blue. The system obeys Beer’s law at 880 nm (λmax) in the 0.005–0.06 mg P mL-1 phosphate concentration range. Molar absorptivity, Sandell’s sensitivity and correlation coefficient values for the determination were 57526 L mol-1 cm-1, 0.2835 μg cm-2 and 0.9948 respectively. The limit of detection was 2.213 x 10-3 mg P mL-1. The results of PO4 3- determination in water samples obtained using the spectrophotometric method developed in this study, compare favourably with those generated using the Murphy and Riley method which is commonly used for this analysis. Therefore, the study ably demonstrates the suitability of the present spectrophotometric method for analysis of the orthophosphate in environmental water samples.en_US
dc.identifier.citationNALUMANSI, I., BIRUNGI, G., MOODLEY, B., & TEBANDEKE, E. Spectrophotometric Determination of Low Levels of the Orthophosphate Anion as Molybdenum Blue using Sodium Thiosulphate Reducing agent. Oriental Journal of Chemistry. http://dx.doi.org/10.13005/ojc/360608en_US
dc.identifier.urihttp://dx.doi.org/10.13005/ojc/360608
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/6734
dc.language.isoenen_US
dc.publisherOriental Journal of Chemistryen_US
dc.subjectSpectrophotometricen_US
dc.subjectPhosphomolybdateen_US
dc.subjectMolybdenum blueen_US
dc.subjectOrthophosphate anionen_US
dc.subjectSodium thiosulphateen_US
dc.titleSpectrophotometric Determination of Low Levels of the Orthophosphate Anion as Molybdenum Blue using Sodium Thiosulphate Reducing agenten_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Spectrophotometric Determination of Low Levels of the.pdf
Size:
319.39 KB
Format:
Adobe Portable Document Format
Description:
Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Natural Sciences