What is the range of sulphate concentration to be measured by turbidimetric method?

The study reports a useful and reliable UV spectrophotometric method that we have developed and validated for the routine determination of sulfate in mine water. The method was found to be suitable for precise and accurate determinations of sulfate concentrations over the range of 10–1,000 mg/L.

Which is the most sensitive method for sulphate determination?

The procedure of Johnson and Nishita (1952) is the most sensitive and accurate colorimetric method used for determination of sulfate.

What induces turbidity in samples in sulfate measurement process?

Nephelometric (Turbidity) Method This method relies on the fact that sulphate ion can be precipitated by barium chloride in an acetic acid medium.

How do you calculate sulphate content?

The turbidimetric method of measuring sulphate is based upon the fact that barium sulphate tends to precipitate in a colloidal form and that this tendency is enhanced in presence of a sodium chloride-hydrochloric acid solution containing glycerol and other organic compounds.

How do you analyze sulfate in water?

A simple and precise turbidimetric method of determining sulfate S in water samples is described. It involves measurement of the turbidity formed when an aliquot of a barium chloride-gelatin reagent is added to an acidified sample.

What is turbidimetric method?

A turbidimetric method for the determination of total urinary proteins is proposed that uses a specimen blank for each urine. Turbidity is measured by reading the 420-nm absorbance 35 minutes after the TCA addition when the turbidity curves for most urine samples plateau.

Is used for sulphate analysis from soil sample?

An ‘AutoAnalyzer’ method is described for determination of sulphate in O. OIM calcium phosphate extracts of agricultural soils. The method is turbidimetric, based on precipitation as barium sulphate, and can measure as little as 0.5 ppm sulphate sulphur in soil.

What is turbidimetric method in microbiology?

The turbidimetric method is characterized by a series of tubes containing different concentrations of antibiotics in a liquid culture medium inoculated with the test microorganism. Reading data obtained after incubation provides a curve displaying the antibiotic concentration with turbidity.

What is sulphate test for?

Testing for sulfate ions A white precipitate of barium sulfate forms if sulfate ions are present. The hydrochloric acid is added first to remove any carbonate ions that might be present – they would also produce a white precipitate, giving a false positive result.

What is sulphate content?

Sulfate contents are generally expressed either in ppm (parts per million) or mg/kg (which is equal to ppm) or in a percent dry weight of soil (10,000 ppm or 10,000 mg/kg is equal to 1 percent by mass).

How much sulfate is safe in water?

Sulfate in drinking water currently has a secondary maximum contaminant level (SMCL) of 250 milligrams per liter (mg/L), based on aesthetic effects (i.e., taste and odor). This regulation is not a Federally enforceable standard, but is provided as a guideline for States and public water systems.

Is method a sulphate?

2. 1 Scope and Application – This method is applicable for all the waters having sulphate concentrations above 10 mg/I; however, it is a time consuming method. 2.2 Principle and Theory – Sulphate is precipitated in hydrochloric acid medium as barium sulphate by the addition of barium chloride solution.

How is sulfate determined by turbidimetry Chem 365?

In this experiment, a natural water or rain sample is assayed turbidimetrically. An excess of barium chloride is added to an acidic solution of the sample. The barium combines with sulfate in the sample to form a barium sulfate suspension. Ba2+ + SO42- BaSO4 (s)

How is the turbidity of barium sulfate determined?

. 2.0 SUMMARY OF METHOD 2.1 Sulfate ion is converted to a barium sulfate suspension under controlled conditions. The resulting turbidity is determined by a nephelometer , filter photometer, or spectrophotometer and compared with a curve prepared from standard sulfate solution.

How is turbidimetry used in the analysis of water?

10. Applications of Turbidimetry or Nephelometry • In the analysis of water, for the determination of turbidity, measure suspended solids in waters and for the control of treatment processes. • The concentration of a variety of ions can be determined using suitable precipitation reagents to form suspensions.

Which is the correct method for 9038 sulfate?

METHOD 9038 SULFATE (TURBIDIMETRIC) 9038 1 CD-ROM Revision 0 Date September 1986 METHOD 9038 SULFATE (TURBIDIMETRIC) 1.0 SCOPE AND APPLICATION 1.1 This method is applicable to ground water, drinking and surface waters, and domestic and industrial wastes. 1.2 This method is suitable for all concentration ranges of sulfate (SO