نتایج جستجو برای: heavy metal toxicity

تعداد نتایج: 418054  

Journal: :Journal of hazardous materials 2007
Shankar Congeevaram Sridevi Dhanarani Joonhong Park Michael Dexilin Kaliannan Thamaraiselvi

Microorganisms play a significant role in bioremediation of heavy metal contaminated soil and wastewater. In this study, heavy metal resistant fungi and bacteria were isolated from the soil samples of an electroplating industry, and the bioaccumulations of Cr(VI) and Ni(II) by these isolates were characterized to evaluate their applicability for heavy metal removal from industrial wastewaters. ...

2017
Lauro Bücker-Neto Ana Luiza Sobral Paiva Ronei Dorneles Machado Rafael Augusto Arenhart Marcia Margis-Pinheiro

Heavy metals are natural non-biodegradable constituents of the Earth's crust that accumulate and persist indefinitely in the ecosystem as a result of human activities. Since the industrial revolution, the concentration of cadmium, arsenic, lead, mercury and zinc, amongst others, have increasingly contaminated soil and water resources, leading to significant yield losses in plants. These issues ...

Journal: :Environmental geochemistry and health 2007
Akinlolu F Abimbola Olusegun O Kehinde-Phillips Akinade S Olatunji

The aim of this study was to assess the heavy metal content of the dust generated by the Sagamu cement factory and its attendant health hazards on the immediate environment, especially on the inhabitants of the area. A total of 25 samples were collected and analyzed using inductively coupled plasma-optical emission spectrometry. Records of medical ailments associated with heavy metal toxicity w...

2016
N. Sivagangi Reddy K. S. V. Krishna Rao

In recent years, many research groups paying attention in removal of heavy metal ions from polluted areas and also controlled drug delivery applications with the hydrogels based on both biomaterials and synthetic grade. Contamination with these heavy metal ions has also increased public concerns because of their toxicity even at lower concentrations, besides non-biodegradability and tendency of...

2017
Shucong Zhen Xiaohui Dong Xiao Tan Youg Xin Zhou

Article history: Received: 21.01.2015. Received in revised form: 21.07.2015. Accepted:23.07.2015. In order to examine the impact of admixture amount on the heavy metal solidification/stabilization effect of Magnesium Potassium Phosphate cement (MKPC), industrial dusts, iron ore tailings and slag were added into Magnesium Potassium Phosphate containing 5g/kg of heavy metals at the ratios of 0, 5...

Journal: :Alternative medicine review : a journal of clinical therapeutic 1998
A L Miller

Heavy metals are, unfortunately, present in the air, water, and food supply. Cases of severe acute lead, mercury, arsenic, and cadmium poisoning are rare; however, when they do occur an effective, non-toxic treatment is essential. In addition, chronic, low-level exposure to lead in the soil and in residues of lead-based paint, to mercury in the atmosphere, in dental amalgams and in seafood, and...

Today, soil pollution with heavy metals is a major environmental concern across the world. Phytoremediation is defined as a technique through which plants are able to absorb contaminants and potently recover the soil that is polluted by heavy metals. The present study aimed to investigate the level of nickel concentration in the roots, stems, and leaves of sunflower, as well as the mobility of ...

2012
S. HARIHARAN V. SUBA M. MURUGESAN

Efforts have been made to prove the safety of the traditional Siddha medicine, Kasha Gulanthaga Mathirai. Effects of Kasha Gulanthaga Mathirai in model organisms were not reported till date. This paper appraises a detail study of physio-chemical properties, phytochemical constituents and heavy metal contents of the selected drug [KGM]. The ICPOES reveals that the main metals present in the tabl...

2007
LI YI YETANG HONG DUOJUN WANG YONGXUAN ZHU

The study of heavy metal speciation is of interest for the evaluation of their ecotoxicological risk. Free heavy metal ion concentrations of Cu2+, Zn2+, Ni2+ and Cd2+ were studied at different soil to soil solution ratio (SSR) to discuss metal bioavailability and toxicity in circumstance. The samples were collected from two farmed soils, impacted by a cadmium rich zinc deposit, Guizhou, China. ...

ژورنال: بوم شناسی آبزیان 2013
Pazooki, Jamileh , Razaghi, Marizeh , Savari, Ahmad , Shokri, Mohammad Reza ,

The toxicity of heavy metals in sediments of the Nayband Bay and Asaluyeh region and potential ecological risk to sediment organisms assessed. Three stations with different degrees of vulnerability of South Pars Oil and Gas Activities (1: Control - 2: medium affected and 3: severely affected) were selected in the study area. Sediment sampling at each station in both cold and hot seasons (2010) ...

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