Determination of polyacrylamides in coal washery effluents by ultrafiltration/size-exclusion chromatography-ultraviolet detection techniques

Leung, Raymond W. M.; Pandey, Raj N.; Das, Bejoy S.

doi:10.1021/es00159a008

Cited by 10 publications

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“…The chemistry and pore size of column packing are two important factors in selection of a column. Two kinds of packing have been used for quantification of aqueous PAMs, that is, surface glycerol‐modified silica (Beazley, 1985; Gharfeh and Moradi‐Araghi, 1986) and methacrylate‐based hydrophilic polymer gel (Leung et al, 1987; Papazian, 1990). Surface‐modified silica columns have better mechanical strength but usually have lower resolution power and are much more susceptible to non‐size‐exclusion interactions (ion exchange, ion exclusion, and sorption) that cause peak tailing (Meehan, 1995).…”

Section: Resultsmentioning

confidence: 99%

“…Size exclusion chromatography (SEC) has the potential to separate PAM from its interferential substances before detection. It has proved effective in measuring PAM concentrations in waters containing organic matter, such as runoff waters in oil production fields (Beazley, 1985; Hunt et al, 1988; Gharfeh and Moradi‐Araghi, 1986) and effluents from coal‐washing sites (Leung et al, 1987). It is very likely that SEC could also be used for soil waters.…”

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Determination of Polyacrylamide in Soil Waters by Size Exclusion Chromatography

Gan

2003

J of Env Quality

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Determination of polyacrylamide (PAM) concentration in soil waters is important in improving the efficiency of PAM application and understanding the environmental fate of applied PAM. In this study, concentrations of anionic PAM with high molecular weight in soil waters containing salts and dissolved organic matter (DOM) were determined quantitatively by size exclusion chromatography (SEC) with ultraviolet (UV) absorbance detection. Polyacrylamide was separated from interferential salts and DOM on a polymeric gel column eluted with an aqueous solution of 0.05 M KH2PO4 and then detected at a short UV wavelength of 195 nm. Analysis of PAM concentrations in soil sorption supernatants, soil leachates, and water samples from irrigation furrow streams showed that SEC is an effective approach for quantifying low concentrations (0-10 mg L(-1)) of PAM in waters containing soil DOM and salts. The method has a lower detection limit of 0.02 microg and a linear response range of 0.2 to 80 mg L(-1). Precision studies gave coefficients of variation of < 1.96% (n = 4) for > 10 mg L(-1) PAM and < 12% (n = 3) for 0.2 to 3 mg L(-1) PAM.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Determination of Polyacrylamide in Soil Waters by Size Exclusion Chromatography

Gan

2003

J of Env Quality

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“…The clean-up step that is required prior to analysis is not a problem when determining anionic or neutral pams, but the loss of cationic pams during chromatography on cation exchange resins and Sephadex is significant. b u n g et al (2) have reported a method of analysis of pams in coal washings involving ultrafiltration followed by HPLC. The method is rather involved and time-consuming, it produces a low percentage of recovery, and its applicability to cationic pams is not clear.…”

Section: Introductionmentioning

confidence: 99%

A tensammetric study of polyacrylamides, including their determination

Smith‐Palmer¹,

Wentzell²,

Donini³

et al. 1988

Can. J. Chem.

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. 66,2658 (1988). Phase-sensitive tensammetry is shown to be a convenient and useful way to analyse polyacrylamides and associated derivatives (pams) in dilute aqueous solutions. Standard curves were obtained with ranges varying from 9 to 25 ppm and limits of detection varying from 0.7 to 2 ppm. Ways to change the range and sensitivity are discussed and demonstrated. Typical interferences and their effects are tabulated, and the analysis of pams in coal washings is discussed. The analysis of certain mixtures of polyacrylarnides is shown to be possible. Chem. 66, 2658Chem. 66, (1988. On a dkmontrt que la tensamttrie sensible la phase est une mtthode approprike et utile dlanalyser des solutions aqueuses dilutes de polyacrylamides et des dtrivts qui leur sont associks (pams). On a obtenu des courbes standards pour des concentrations allant de 9 a 25 ppm et des L.D.D allant de 0,7 2 ppm. On discute des mkthodes qui permettraient de modifier la limite de dktection ainsi que la sensibilitk et on en fait la dtmonstration. On prtsente un tableau rksumant les interfkrences typiques ainsi que leurs effets et on discute de l'analyse des pams dans les lavages de charbon. On dkmontre que l'analyse de certains mklanges de polyacrylamides est possible.[Traduit par la revue]

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“…Basic operational conditions are shown in Table 3.7. (Becher, Carlberg et al 1985); (Leung, Pandey et al 1987;Chin, Aiken et al 1994;Pelekani, Newcombe et al 1999;Sanly, Lim et al 2007).…”

Section: Operational Conditionsmentioning

confidence: 99%

Removal of humic acid in water using an integrated TiO2 photocatalytic oxidation and membrane system

Bai¹

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LIST OF TABLES ix LIST OF FIGURES x NOMENCLATURE xiii CAPTER 1 INTRODUCTION 1 1.1 Background 1 1.2 Objectives 3 1.3 Scopes of Study 3 1.4 Organization of Thesis CHAPTER 2 LITERATURE REVIEW 2.1 Introduction 2.2 NOM and Humic Substances 2.3 Humic Acid in Water Treatment 11 2.4 Removal of Humic Acid in Water 2.4.1 Conventional Water Treatment Technologies 2.4.2 Membrane Filtration Technology 2.4.3 Advanced Oxidation Processes 2.5 Integrated Processes of PCO and Membrane Filtration for Humic Acid Removal

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Determination of polyacrylamides in coal washery effluents by ultrafiltration/size-exclusion chromatography-ultraviolet detection techniques

Cited by 10 publications

References 0 publications

Determination of Polyacrylamide in Soil Waters by Size Exclusion Chromatography

Determination of Polyacrylamide in Soil Waters by Size Exclusion Chromatography

A tensammetric study of polyacrylamides, including their determination

Removal of humic acid in water using an integrated TiO2 photocatalytic oxidation and membrane system

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