Assessment of the variation of heavy metal pollutants in soil and crop plants through field and laboratory tests

AbstractChromium (Cr) is a common toxic heavy metal that is widely used in all kinds of industries, causing a series of environmental problems. Nanoscale zero- valent iron (nZVI) is considered to be an ideal remediation material for contaminated soil, especially for heavy metal pollutants. As a material of low toxicity and good activity, nZVI has been widely applied in the in situ remediation of soil hexavalent chromium (Cr(vi)) with mobility and toxicity in recent years. In this paper, some current technologies for the preparation of nZVI are summarized and the remediation mechanism of Cr(vi)-contaminated soil is proposed. Five classified modified nZVI materials are introduced and their remediation processes in Cr(vi)-contaminated soil are summarized. Key factors affecting the remediation of Cr(vi)-contaminated soil by nZVI are studied. Interaction mechanisms between nZVI-based materials and Cr(vi) are explored. This study provides a comprehensive review of the nZVI materials for the remediation of Cr(vi)-contaminated soil, which is conducive to reducing soil pollution.

Download Full-text

Determination of median lethal concentration of two common heavy metal pollutants in rivers, potassium chromate and cadmium nitrate, to red zebrafish and their mortality causes

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/601/1/012027 ◽

2020 ◽

Vol 601 ◽

pp. 012027

Author(s):

Yipeng Liu ◽

Zhonghao He ◽

Jiyang Ye ◽

Yan Zheng ◽

Ziqi Huang ◽

...

Keyword(s):

Heavy Metal ◽

Potassium Chromate ◽

Lethal Concentration ◽

Cadmium Nitrate ◽

Median Lethal Concentration ◽

Metal Pollutants ◽

Mortality Causes ◽

Heavy Metal Pollutants

Download Full-text

Highly sensitive detection of Cr(vi) in groundwater by bimetallic NiFe nanoparticles

Analytical Methods ◽

10.1039/c6ay03089k ◽

2017 ◽

Vol 9 (6) ◽

pp. 1031-1037 ◽

Cited By ~ 3

Author(s):

Jingtao Liu ◽

Yu Ding ◽

Lifei Ji ◽

Xin Zhang ◽

Fengchun Yang ◽

...

Keyword(s):

Heavy Metal ◽

Hexavalent Chromium ◽

Low Cost ◽

High Sensitivity ◽

Sensitive Detection ◽

Toxic Heavy Metal ◽

Metal Pollutants ◽

Highly Sensitive ◽

Highly Sensitive Detection ◽

Heavy Metal Pollutants

Hexavalent chromium (Cr(vi)) is one of the most toxic heavy metal pollutants in groundwater, and thus the detection of Cr(vi) with high sensitivity, accuracy, and simplicity and low cost is of great importance.

Download Full-text

The Effect of Heavy Metal Pollutants on Bioluminescence Intensity of Luminous Mushrooms (Nenothopanus sp)

EKSAKTA Berkala Ilmiah Bidang MIPA ◽

10.24036/eksakta/vol21-iss2/235 ◽

2020 ◽

Vol 21 (2) ◽

pp. 98-109

Author(s):

Witriani Marvinatur Ihsan ◽

Ratnawulan Ratnawulan

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Heavy Metal Concentration ◽

Maximum Intensity ◽

Coastal Forest ◽

Metal Pollutants ◽

Heavy Metal Concentrations ◽

Measurement Results ◽

West Sumatra ◽

Heavy Metal Pollutants

In the South Coastal Forest area, West Sumatra, a luminous mushroom with the species Neonothopanus Sp. This research was conducted with the aim of seeing the effect of heavy metals on the bioluminescence reaction of luminous mushrooms. Starting from the effect of heavy metal concentrations on the intensity and inhibition coefficient of luminous mushroom biolumination. From the measurement results, the maximum intensity value of luminous mushrooms is 499.6 au occurring at a wavelength of 505 nm. At a wavelength of 505 nm, visible light is produced in green. The results obtained are in accordance with observations, because the light emitted by the glowing mushroom is green. If the concentration of heavy metals is greater, the intensity of the bioluminescent fungus (Neonothopanus sp) will decrease. The type of heavy metal affects the intensity of the fungus biolumination. The greatest decrease in intensity occurred in copper (Cu) and iron (Fe), zinc (Zn) and lead (Pb). If the heavy metal concentration is greater, the inhibition coefficient will be smaller. The greatest inhibition coefficient due to the presence of heavy metals occurs in copper (Cu) then iron (Fe), zinc (Zn) and the smallest is lead (Pb).

Download Full-text

A Fuzzy Cluster Algorithm of Heavy Metal City Topsoil Pollution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.830.341 ◽

2013 ◽

Vol 830 ◽

pp. 341-344

Author(s):

Jun Jun Du ◽

Sheng Ping Jin ◽

Qiong Li ◽

She Sheng Zhang

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Fuzzy Clustering ◽

Clustering Algorithm ◽

Fuzzy Ahp ◽

Science Research ◽

Fuzzy Cluster ◽

Metal Pollutants ◽

Fuzzy Cluster Algorithm ◽

Heavy Metal Pollutants

Consider heavy metal pollution of topsoil in the city of world today is a hot science research project. A fuzzy clustering algorithm l is constructed ed by analyzing the propagation characteristics of heavy metal pollutants. Considering topography, areas, factories, roads, , irredentist, etc. we calculate a evaluation on comprehensive pollution, and the degree of heavy metals pollution, by using fuzzy clustering and fuzzy AHP. The results show that the index of the comprehensive pollution of heavy metals on the region, and the weight of pollution of each category.

Download Full-text