Nephelometry and Turbidimetry


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  Notes
 
 
1 : TURBIDIMETRY AND NEPHELOMETRY
2 : TURBIDIMETRY AND NEPHELOMETRY Presented By - Mr. Shaise Jacob Faculty Nirmala College of Pharmacy Muvattupuzha, Kerala India Email – jacobshaise@gmail.com
3 : » Analysis of Suspensions NEPHELOMETRY – Measurement of scattered light ( opalescence) TURBIDIMETRY - Measurement of transmitted light ( turbidity ) » absorption, refraction & reflection ? transmitted Tyndall Effect .. Scattering of light-
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7 : Turbidimetry ? Colorimetry Nephelometry ? Fluorimetry
8 : NEPHELOMETRY ? concentration, uniform scattering, intensity of scatted light proportional to conc. measured at 900 TURBIDIMETRY ? concentration, scattering not uniform, intensity of transmitted light measured at 1800 Factors affecting measurements Concentration, Particle geometry, WL of incident light, RI difference
9 : Nephelometer
10 : Science of Colorimeter
11 : Tungsten lamp Filters- Turbidimeter (blue filter or 530 nm) Nephelometer (visible filter) Sample cells Detectors (photometric) SOP Nephelometer: Flourimeter ? Nephelometer by using a visible filter as secondary filter
12 : TURBIDIMETER
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15 : APPLICATIONS Analysis of water clarity, conc. of ions Determination of CO2 Determination of inorganic substances Sulphate – barium chloride Ammonia – Nesslers reagent Phosphorus – Strychine molybedate Biochemical Analysis 5. Quantitative Analysis – (ppm level)
16 : 6. Miscellaneous Water treatment plants, sewage work, refineries, paper industry 7. Atmospheric pollution smokes & fogs 8. Determination of mole. Wt of high polymers 9. Phase titration NEPHLOTURBIDIMETER Two detectors
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