Multi-elemental speciation analysis of barley genotypes differing in tolerance to cadmium toxicity using SEC-ICP-MS and ESI-TOF-MS

2006 ◽  
Vol 21 (10) ◽  
pp. 996 ◽  
Author(s):  
Daniel P. Persson ◽  
Thomas H. Hansen ◽  
Peter E. Holm ◽  
Jan K. Schjoerring ◽  
Hans Christian B. Hansen ◽  
...  
Keyword(s):  
Cadmium Toxicity ◽  
Speciation Analysis ◽  
Elemental Speciation ◽  
Icp Ms ◽  
Tolerance To Cadmium ◽  
Barley Genotypes ◽  
Tof Ms

scholarly journals Root excretion and plant tolerance to cadmium toxicity - a review

2008 ◽  
Vol 53 (No. 5) ◽  
pp. 193-200 ◽  
Author(s):  
J. Dong ◽  
W.H. Mao ◽  
G.P. Zhang ◽  
F.B. Wu ◽  
Y. Cai
Keyword(s):  
Root Exudates ◽  
Anthropogenic Activities ◽  
Cadmium Toxicity ◽  
Research Work ◽  
Future Research ◽  
Rhizosphere Ph ◽  
Plant Tolerance ◽  
Rhizosphere Environment ◽  
Safe Food ◽  
Tolerance To Cadmium

Significant quantities of Cd have been added to soils globally due to various anthropogenic activities, posing a serious threat to safe food production and human health. Rhizosphere, as an important interface of soil and plant, plays a significant role in the agro-environmental system. This article presents a review of relationship between root excretion and microorganisms and plant resistance to Cd toxicity and possible mechanisms. Root exudates markedly altered in species and quantity under Cd stress. Root exudates can affect Cd absorption by plants through changing the physical and chemical characteristics of rhizospheres. The influence of root exudates on Cd bioavailability and toxicity may include modifying the rhizosphere pH and Eh, chelating/complexing and depositing with Cd ions, and altering the community construction, the numbers and activities of rhizospheric microbes. In this paper, the methods to reduce the transfer of Cd in soil-plant system by adjusting rhizosphere environment are discussed, and some aspects are also proposed that should be emphasized in the future research work.

scholarly journals Mercury determination and speciation analysis in surface waters

2012 ◽  
Vol 10 (4) ◽  
pp. 1175-1182 ◽  
Author(s):  
Elisaveta Mladenova ◽  
Ivanka Dakova ◽  
Dimiter Tsalev ◽  
Irina Karadjova
Keyword(s):  
Surface Waters ◽  
Inductively Coupled Plasma ◽  
Mechanical Stability ◽  
Solid Phase ◽  
Chemical Vapor ◽  
Speciation Analysis ◽  
Regeneration Ability ◽  
Mercury Species ◽  
Icp Ms ◽  
Relative Standard

AbstractA sorbent L-cysteine grafted silica gel has been evaluated for separation and enrichment of dissolved inorganic i-Hg(II) and methylmercury CH3Hg(I) from surface waters at sub-µg L−1 concentrations. Chemical parameters for mercury species enrichment and separation have been optimized. Analytical schemes for the determination of Hg species, using selective column solid phase extraction (SPE) with continuous flow chemical vapor generation atomic absorption spectrometry (CF-CVG-AAS) or inductively coupled plasma-mass spectrometry (ICP-MS) were developed. Possibilities for on-site SPE enrichment were demonstrated as well. The limits of quantification were 1.5 and 5 ng L−1 for dissolved i-Hg(II) and CH3Hg(I) by CF-CVG-AAS and 1 and 2.5 ng L−1 by ICP-MS with relative standard deviations between 7–12% and 7–14%, respectively. The chemically modified SPE sorbent has demonstrated high regeneration ability, chemical and mechanical stability, acceptable capacity and good enrichment factors. Results for total dissolved mercury were in reasonable agreement with those from independent analyses by direct ICP-MS determinations for river waters and for estuarine water certified reference material.

Sample pre-treatment techniques for use with ICP-MS hyphenated techniques for elemental speciation in biological samples

2017 ◽  
Vol 32 (1) ◽  
pp. 58-77 ◽  
Author(s):  
Han Wang ◽  
Xiaolan Liu ◽  
Kai Nan ◽  
Beibei Chen ◽  
Man He ◽  
...  
Keyword(s):  
Biological Samples ◽  
State Of The Art ◽  
Sample Pretreatment ◽  
The State ◽  
Elemental Speciation ◽  
Hyphenated Techniques ◽  
Treatment Techniques ◽  
Icp Ms ◽  
Pre Treatment

This review will focus specifically on the state of the art of novel sample pretreatment methods which have been combined with ICP-MS based hyphenated techniques for elemental speciation in biological samples.

Absence of Changes in Metallothionein RNA in the Rat Testes Made Refractory to Cadmium Toxicity by Zinc Pretreatment

1994 ◽  
Vol 13 (1) ◽  
pp. 65-67 ◽  
Author(s):  
Zakaria Z. Wahba ◽  
Mark Steven Miller ◽  
Michael P. Waalkes
Keyword(s):  
Low Dose ◽  
Interstitial Cell ◽  
Cadmium Toxicity ◽  
Cdna Probe ◽  
Testicular Toxicity ◽  
Slot Blot ◽  
Tissue Resistance ◽  
Blot Technique ◽  
Induced Tolerance ◽  
Tolerance To Cadmium

Testicular toxicity and interstitial cell tumours induced by cadmium are prevented by zinc or by low dose cadmium pretreatments. The mechanism of this tolerance is unknown, though metallothionein (MT) is thought to play a role in tissue resistance to cadmium toxicity. Thus, the possible involvement of the testicular MT gene in metal-induced tolerance to cadmium toxicity was studied. Rats were pretreated with zinc (1.0 mmol kg-1, s.c.). Histological examination of the testes indicated such pretreatments prevented the necrotizing effects of subsequent doses of cadmium (20 ?mol kg-1, s.c.) administered 24 h later. RNA was extracted from testes or liver 24 h after zinc pretreatment, and analysed by the slot blot technique using the p2A10 cDNA probe to the MT gene. Zinc pretreatment had little effect on MT RNA in the testes, and such pretreatments did not alter testicular cadmium-binding protein capacity. In contrast, RNAs derived from livers of zinc pretreated rats showed marked increases in MT RNA and MT protein. Hence, the testicular MT gene does not appear to play a major role in the induced tolerance to cadmium toxicity and carcinogenesis generated by zinc.

Standardless identification of selenocystathionine and its γ-glutamyl derivatives in monkeypot nuts by 3D liquid chromatography with ICP-MS detection followed by nanoHPLC–Q-TOF-MS/MS

The Analyst ◽  
2007 ◽  
Vol 132 (5) ◽  
pp. 439-449 ◽  
Author(s):  
Mihaly Dernovics ◽  
Tamara García-Barrera ◽  
Katarzyna Bierla ◽  
Hugues Preud'homme ◽  
Ryszard Lobinski
Keyword(s):  
Liquid Chromatography ◽  
Ms Detection ◽  
Icp Ms ◽  
Tof Ms
Sign in / Sign up

Export Citation Format

Share Document