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SSAC 501 QUANTITATIVE INORGANIC ANALYSIS                                                                               (3L+2P) I

Objective
To impart the basic knowledge to the students on principles of inorganic analysis including use of instruments in soil, plant and water research and develop their skills as the quality analysts through sustained practical exercises

Theory

UNIT I
Introduction and scope of the course; principles of chemical analyses; ionic equilibria, ionic product, hydrolysis, solubility product.

UNIT II
Fusion and digestion of soil and plant samples including wet digestion and dry-ashing.

UNIT III
Volumetric analysis: Principles of volumetric analysis; neutralization reactions, complex formation reactions, precipitation reactions and oxidation-reduction reactions; indicators and theory of indicators.

UNIT IV
Gravimetric analysis: Formation and properties of precipitates; washing of precipitates; co- precipitation and post-precipitation; conditions of precipitation.

UNIT V
Principles of potentiometry; Beer-Lambert’s law; colorimetry, turbidimetry and spectrophotometry.

UNIT VI
Emission and absorption spectroscopy: Principles of flame photometry, atomic absorption spectroscopy and inductively coupled plasma atomic emission spectroscopy.

UNIT VII
Errors in quantitative inorganic analysis.

Practicals
Preparation of primary and secondary standard solutions; wet digestion/ fusion of soil for elemental analysis; tri-acid/di-acid digestion of plant samples; estimation of chloride by Mohr and Volhard’s titration; organic carbon by Walkley and Black method; nitrogen in soil: total, ammoniacal, nitrate and available N, plant-N content by Kjeldahl method; volumetric and colorimetric estimation of P in soil, plant and water; estimation of zinc, iron, copper and manganese in soils and plants by colorimetry and atomic absorption spectrometry; potassium estimation by flame photometery; CO2-, HCO - and RSC in irrigation water; Ca by Ca-oxalate titration; S in soils and plants by turbidimetric and BaCrO4 precipitation–yellow colour methods; Ca and Mg by versenate titration method; boron by azomethine-H method

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