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.

HPLC-UV Method for Determination of Famotidine from Pharmaceutical Products

2018 ◽  
Vol 69 (2) ◽  
pp. 297-299
Author(s):  
Adriana Nita ◽  
Delia Mirela Tit ◽  
Lucian Copolovici ◽  
Carmen Elena Melinte (Frunzulica) ◽  
Dana Maria Copolovici ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Quantitative Analysis ◽  
Linear Response ◽  
Mobile Phase ◽  
Acetic Acid Solution ◽  
Pharmaceutical Products ◽  
Quantification Limit ◽  
Validation Parameters ◽  
Hplc Analyses

The aim of this study was to develop and validate a rapid, accurate, and exact method for the quantitative determination of famotidine in pharmaceutical products. The HPLC analyses were performed by using a mobile phase containing methanol:1% acetic acid solution=30:7 (v/v), at a flow rate of 0.4 mL/min.The total time of the method was 10 min, and the retention time of famotidine was 4.16 min. The detection was evaluated at l=267 nm. The method has been validated by using different validation parameters. The linear response of the detector for famotidine peak area was observed at concentrations ranging from 0.1 to 0.0001 mg mL-1 , resulting in a correlation coefficient of 0.99998. The values of the detection limit and of the quantification limit are 0.00048 mg mL-1 and 0.00148 mg mL-1, respectively. The method proposed allowed accurate (with a relative error of less than 2%) and precise (RSD values less than 2.0%) determination of famotidine content in pharmaceutical products and can be used for its rapid quantitative analysis.

scholarly journals Mutagenicity and genotoxicity of suspended particulate matter in the Seine river estuary

2012 ◽  
Vol 741 (1-2) ◽  
pp. 7-12 ◽  
Author(s):  
Françoise Vincent-Hubert ◽  
Karine Heas-Moisan ◽  
Catherine Munschy ◽  
Jacek Tronczynski
Keyword(s):  
Particulate Matter ◽  
Suspended Particulate Matter ◽  
River Estuary ◽  
Seine River ◽  
Suspended Particulate
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