Aromatic hydrocarbons in waters of Port Phillip Bay and the Yarra River estuary

1984 ◽  
Vol 35 (2) ◽  
pp. 119 ◽  
Author(s):  
JD Smith ◽  
WA Maher
Keyword(s):  
Aromatic Hydrocarbons ◽  
Coastal Waters ◽  
River Estuary ◽  
Fluorescence Emission ◽  
Wide Distribution ◽  
Small Contribution ◽  
Emission Analysis ◽  
Fuel Oils ◽  
Yarra River

Determination of aromatic hydrocarbons in coastal waters, using solvent extraction and fluorescence emission analysis, shows wide distribution of fuel oils with only a small contribution from crude oil. Oil concentrations are reported as equivalent amounts of m-terphenyl (T) or pyrene (P). Observed concentrations in Port Phillip Bay are generally 0.2-0.3 pg l-1 (T) and 0.1-0.2 pg l-1 (P), with higher values in Corio Bay and the Yarra River estuary.

Determination of Iron in Suspended Matter and Sediments of the Yarra River Estuary, and the Distribution of Copper, Lead, Zinc and Manganese in the Sediments

1979 ◽  
Vol 30 (6) ◽  
pp. 731 ◽  
Author(s):  
JD Smith ◽  
PJ Milne
Keyword(s):  
Acetic Acid ◽  
Particulate Matter ◽  
Acetic Acid Solution ◽  
River Estuary ◽  
Hydroxylamine Hydrochloride ◽  
Suspended Particulate ◽  
Lead Zinc ◽  
Copper Lead ◽  
Yarra River

Sediments from the Yarra River estuary were analysed for Cu, Pb, Zn, Mn, Fe and Ca extractable in hydroxylamine hydrochloride-acetic acid solution. Strong correlation of Pb and Zn with extractable Fe was observed. The behaviour of Cu indicated that it was not only controlled by the hydrated iron oxides, but that some may be organically bound. The effects of salinity on the suspended particulate matter were examined, and variations in the amount of extractable Fe in the particulate matter observed.

Dc arc emission analysis of rare earth metals and their oxides with sorption preconcentration of impurities

2018 ◽  
Vol 84 (11) ◽  
pp. 9-14
Author(s):  
E. S. Koshel ◽  
V. B. Baranovskaya ◽  
M. S. Doronina
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Analytical Signal ◽  
Graphite Powder ◽  
Atomic Emission ◽  
Standard Samples ◽  
Emission Analysis ◽  
Sorption Preconcentration ◽  
Sample Shape

The analytical capabilities of arc atomic emission determination of As, Bi, Sb, Cu, Te in rare earth metals (REM) and their oxides after preparatory group concentration using S,N-containing heterochain polymer sorbent are studied on a high-resolution spectrometer “Grand- Extra” (“WMC-Optoelectron-ics” company, Russia). Sorption kinetics and dependence of the degree of the impurity extraction on the solution acidity are analyzed to specify conditions of sorption concentration. To optimize the procedure of arc atomic emission determination of As, Bi, Sb, Cu, and Te various schemes of their sorption preconcentration and subsequent processing of the resulted concentrate with the addition of a collector at different stages of the sorption process have been considered. Graphite powder is used as a collector in analysis of rare earth oxides due to universality and relative simplicity of the emission spectrum. Conditions of analysis and parameters of the spectrometer that affect the analytical signal (mass and composition of the sample, shape and size of the electrodes, current intensity and generator operation mode, interelectrode spacing, wavelengths of the analytical lines) are chosen. The evaporation curves of the determinable impurities were studied and the exposure time of As, Bi, Sb, Cu, and Te in the resulted sorption concentrate was determined. Correctness of the obtained results was evaluated using standard samples of the composition and in comparisons between methods. The results of the study are used to develop a method of arc chemical-atomic emission analysis of yttrium, gadolinium, neodymium, europium, scandium and their oxides in a concentration range of n x (10-2 - 10-5) wt.%.

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