Characterisation of River Po particles by sedimentation field-flow fractionation coupled to GFAAS and ICP-MS

被引:57
作者
Contado, C
Blo, G
Fagioli, F
Dondi, F
Beckett, R
机构
[1] MONASH UNIV,CRC FRESHWATER ECOL,WATER STUDIES CTR,CAULFIELD,VIC 3145,AUSTRALIA
[2] MONASH UNIV,DEPT CHEM,CAULFIELD,VIC 3145,AUSTRALIA
基金
澳大利亚研究理事会;
关键词
SdFFF-GFAAS; SdFFF-ICP-MS; water-borne particle analysis;
D O I
10.1016/S0927-7757(96)03717-X
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A procedure for elemental composition determination of water-borne river particles (Po River) on both size-fractionated and unfractionated submicron particles (0.1-1 mu m) by graphite furnace atomic absorption spectroscopy (GFAAS) and inductively coupled plasma-mass spectrometry (ICP-MS) is reported. Sample fractionation was performed using sedimentation field-flow fractionation (SdFFF). The distribution of relative mass vs. particle size was determined using UV detection. Fractions were collected over a narrow size range for scanning electron microscopy. With this combination of techniques the mass, elemental composition, and shape distributions can be obtained across the size spectrum of the sample. The size distributions of the major elements (Al, Fe) were determined by coupling both GFAAS and ICP-MS techniques to the SdFFF. The procedure was validated using a reference clay sample. Satisfactory agreement was found between both the GFAAS and ICP-MS aluminium signal and the UV detector signal. Some discrepancies were observed in the Fe/AI ratios when comparing GFAAS and ICP-MS. Thus further investigation is in order to fully assess the role of SdFFF-ICP-MS and SdFFF-GFAAS techniques for elemental characterisation of aquatic colloids. Both GFAAS and ICP-MS signals unambiguously indicate a significantly higher Fe content in the lower size range, which is consistent with previous investigations. Trace element levels in unfractionated Po River particles, determined by both GFAAS and ICP-MS, show good agreement. The high levels of Cu, Pb, Cr and Cd found associated with the colloidal particles underlines the significance of the environmental role played by the suspended matter in rivers in both highly industrialised and intensively cultivated areas.
引用
收藏
页码:47 / 59
页数:13
相关论文
共 27 条
[1]  
ALLEN T, 1974, PARTICLE SIZE MEASUR, pCH7
[2]   THE USE OF SEDIMENTATION FIELD-FLOW FRACTIONATION TO STUDY SUSPENDED PARTICULATE MATTER [J].
BECKETT, R ;
NICHOLSON, G ;
HOTCHIN, DM ;
HART, BT .
HYDROBIOLOGIA, 1992, 235 :697-710
[3]   THE APPLICATION OF FIELD-FLOW FRACTIONATION TECHNIQUES TO THE CHARACTERIZATION OF COMPLEX ENVIRONMENTAL-SAMPLES [J].
BECKETT, R .
ENVIRONMENTAL TECHNOLOGY LETTERS, 1987, 8 (07) :339-354
[4]   SEPARATION AND BEHAVIOR OF NONSPHERICAL PARTICLES IN SEDIMENTATION STERIC FIELD-FLOW FRACTIONATION [J].
BECKETT, R ;
JIANG, Y ;
LIU, GY ;
MOON, MH ;
GIDDINGS, JC .
PARTICULATE SCIENCE AND TECHNOLOGY, 1994, 12 (01) :89-113
[5]   SEPARATION AND SIZE CHARACTERIZATION OF COLLOIDAL PARTICLES IN RIVER WATER BY SEDIMENTATION FIELD-FLOW FRACTIONATION [J].
BECKETT, R ;
NICHOLSON, G ;
HART, BT ;
HANSEN, M ;
GIDDINGS, JC .
WATER RESEARCH, 1988, 22 (12) :1535-1545
[6]   USE OF FIELD-FLOW FRACTIONATION TO STUDY POLLUTANT-COLLOID INTERACTIONS [J].
BECKETT, R ;
HOTCHIN, DM ;
HART, BT .
JOURNAL OF CHROMATOGRAPHY, 1990, 517 :435-447
[7]  
BECKETT R, UNPUB COLLOIDS SURFA
[8]  
BECKETT R, UNPUB J COLLOID INTE
[9]  
Beckett R., 1986, ROLE PARTICULATE MAT, P113
[10]   CHARACTERIZATION OF LOW-DENSITY POLYBUTADIENE LATEXES BY SEDIMENTATION FIELD-FLOW FRACTIONATION [J].
BLANDA, M ;
RESCHIGLIAN, P ;
DONDI, F ;
BECKETT, R .
POLYMER INTERNATIONAL, 1994, 33 (01) :61-69