Application of spectrodissymmetry method by characterization of poly(styrene) latex

Antalik, J.; Vavra, J.; Liška, Marek

doi:10.1007/bf00652309

Cited by 1 publication

(1 citation statement)

References 11 publications

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“…The scatter intensity as described by Eq 1 is a function of the angle of detection. Dissymmetry in angular intensity distribution has been used in the past to characterize macromolecules 16 and particles in the Lorentz–Mie regime 33 , 34 . A data inversion procedure has been used to estimate the lognormal size distribution parameters and refractive index for combustion aerosols 35 , 36 .…”

Section: Optical Detection: Backgroundmentioning

confidence: 99%

Evaluation of optical detection methods for waterborne suspensions

Sethi¹,

Patnaik²,

Biswas³

et al. 1997

Journal AWWA

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Making design criteria for turbidimeters more stringent would enable an integrated approach to turbidity measurement and particle detection. Turbidimeters and optical particle counters (OPCs) are used to monitor particulate matter in water. The response from these instruments is governed by the optical properties of the suspension and the instrument design. The recommended design criteria for turbidimeters allow for large tolerances that lead to variations in measurements from different instruments. OPCs provide size‐specific information but may inaccurately size microorganisms or particles having optical properties different from those of the calibration particles. The authors evaluate the effects of optical design parameters in turbidimeters and OPCs. Performance data from two OPCs are presented. A multiple‐angle light‐scattering method was developed to obtain “optical signatures” from suspensions of monodisperse spheres and several microorganism isolates. Such “signatures” provide more optical information on waterborne particles and may also be used to identify specific types of microorganisms in real time.

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