scholarly journals Denitrification In Aquatic Sediments

1990 ◽  
pp. 301-322 ◽  
Author(s):  
Sybil P. Seitzinger
Keyword(s):  
Aquatic Sediments

Distinct Microbial Behavior of Re Compared to Tc: Evidence Against Microbial Re Fixation in Aquatic Sediments

2009 ◽  
Vol 26 (7) ◽  
pp. 470-483 ◽  
Author(s):  
Marvourneen K. Dolor ◽  
Cynthia C. Gilmour ◽  
George R. Helz
Keyword(s):  
Aquatic Sediments

Phytate as a novel phosphorus-specific paleo-indicator in aquatic sediments

2008 ◽  
Vol 42 (3) ◽  
pp. 391-400 ◽  
Author(s):  
Benjamin L. Turner ◽  
Kaarina Weckström
Keyword(s):  
Aquatic Sediments

scholarly journals Multi-Elemental Inductively Coupled Plasma-Optical Emission Spectroscopic Calibration Problems of the Sequential Extraction Procedure for the Fractionation of the Heavy Metal Content from Aquatic Sediments

2015 ◽  
Vol 43 (1) ◽  
pp. 7-14 ◽  
Author(s):  
György Heltai ◽  
Ilona Fekete ◽  
Gábor Halász ◽  
Katalin Kovács ◽  
Márk Horváth ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Sequential Extraction ◽  
Inductively Coupled Plasma ◽  
Heavy Metal Contamination ◽  
Matrix Effects ◽  
Extraction Procedure ◽  
Optical Emission ◽  
Sequential Extraction Procedure ◽  
Aquatic Sediments ◽  
Inductively Coupled

Abstract For the characterisation of the environmental mobility of heavy metal contamination in aquatic sediments, the EU Bureau of Reference has proposed a fractionation by sequential extraction procedure. For its validation, the CRM-701 sample is available containing Cd, Cr, Cu, Ni, Pb, and Zn. In this paper, the matrix-matched calibration problems are presented. A multi-elemental inductively coupled plasma-optical emission technique is employed for the detection of heavy metals in the extracts. It was established that the sensitivities are strongly influenced by the extractants, which causes significant matrix effects: the sensitivities are strongly influenced by the solvents applied in extraction steps; the summarised recoveries show an acceptable agreement with the certified values; however, in the individual extraction steps for certain elements significant differences may occur due to the neglected interferences. Therefore, further optimisation is required utilising the flexible line selection possibility offered by the HORIBA Jobin Yvon ACTIVA-M instrument.

Lipids of aquatic sediments and sedimenting particulates

1982 ◽  
Vol 21 (4) ◽  
pp. 271-308 ◽  
Author(s):  
P Cranwell
Keyword(s):  
Aquatic Sediments
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