Full-color emissive carbon-dots targeting cell walls of onion for in situ imaging of heavy metal pollution

The Analyst ◽  
2019 ◽  
Vol 144 (11) ◽  
pp. 3685-3690 ◽  
Author(s):  
Zheng Yao ◽  
Zhiqiang Lai ◽  
Chengchi Chen ◽  
Suting Xiao ◽  
Peihui Yang
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Carbon Dots ◽  
Cell Walls ◽  
Full Color ◽  
In Situ Imaging

Full-colour emissive carbon-dots were prepared and applied in targeting onion CWs for in situ imaging of heavy metal pollution.

In situ detection of heavy-metal ions in sewage with screen-printed electrode-based portable electrochemical sensor

The Analyst ◽  
2021 ◽  
Author(s):  
Qiwen Bao ◽  
Gang Li ◽  
Zhengchun Yang ◽  
peng pan ◽  
Jun Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Heavy Metal Ions ◽  
Rapid Development ◽  
Electrochemical Analysis ◽  
Screen Printed Electrode ◽  
In Situ Detection

The rapid development of industrial technologies continuously increases the heavy-metal pollution of water resources. Recently, portable electrochemical analysis-based devices for detecting heavy-metal ions have attracted much attention due to their...

IN-SITU DETECTION OF HEAVY METAL POLLUTION IN SEAWATER WITH DIAMOND COATED ELECTRODES

2019 ◽  
Vol 26 (04) ◽  
pp. 1850179
Author(s):  
BIN ZHAO ◽  
JIA LI ◽  
XIANG YU ◽  
JING ZHANG ◽  
YI REN
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Mercury Electrode ◽  
In Situ Monitoring ◽  
National Standard ◽  
Electrochemical Window ◽  
Multiple Heavy Metals

Heavy metal pollution endangers seawater and there is urgent need for the development of effective detectors that can provide warning of heavy metal pollution. Anodic stripping voltammetry is applicable for the detection of heavy metal pollution in sea water, but it suffers from two problems that are associated with the mercury electrode used: one is insufficient sensitivity and the other is secondary pollution caused by toxic mercury. In this work, we employed boron-doped diamond electrode as an alternative to mercury electrode for the detection of heavy metals. The BDD electrode was fabricated and its electrochemical properties were ascertained. The results of this work showed that: (1) the electrode prepared has a wide electrochemical window (4.2 V) and low background current ([Formula: see text]A). (2) multiple heavy metals (Pb[Formula: see text], Cd[Formula: see text], Zn[Formula: see text] and Cu[Formula: see text]) in seawater samples are detected simultaneously with the optimized electrode, with high sensitivity and good repeatability. (3) the repeatability of the detection meets the values stipulated in the national standard. The detection period is less than 15[Formula: see text]min, and in situ monitoring of heavy metals in seawater can be achieved by automatic sampling and wireless data transmission.

Carbon dots alleviate the toxicity of cadmium ions (Cd2+) toward wheat seedlings

2019 ◽  
Vol 6 (5) ◽  
pp. 1493-1506 ◽  
Author(s):  
Lian Xiao ◽  
Huiyuan Guo ◽  
Shouxia Wang ◽  
Junli Li ◽  
Yunqiang Wang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Carbon Dots ◽  
Wheat Seedlings ◽  
Cadmium Ions

Heavy metal pollution poses great toxicity to plants, which makes methods to mitigate the heavy metal-induced toxicity desirable.

Heavy Metal Pollution and its Management

2016 ◽  
pp. 27-50 ◽  
Author(s):  
Ashok K. Rathoure
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Ex Situ ◽  
Management Tool ◽  
Contaminated Site ◽  
Anthropogenic Activity ◽  
Toxic Heavy Metals ◽  
Metabolic Degradation

Environmental degradation has become a major societal issue thanks to uncontrolled anthropogenic activity, besides natural factors. Entry of toxic heavy metals and minerals in human system mainly through contaminated water, food and air, leads to overt and insidious health problems. Heavy metal pollution, a global concern today, can be managed by using bioremediation, an eco-friendly alternative. Bioremediation is one of the most promising technological approaches to the problem of hazardous waste. It is a technology for removing pollution from environment, restoring contaminated site and preventing future pollution. Bioremediation can be performed in situ or ex situ. Microorganisms directly degrade contaminants rather than merely transferring them from one medium to another, employ metabolic degradation pathways and can be used in situ to minimize disturbance of the cleanup site. Hence, microorganisms can be effective, economical and non-disruptive tools for eliminating hazardous chemicals. Its advantage generally outweigh the disadvantage, therefore may be used as management tool.

Heavy Metal Pollution and its Management

2020 ◽  
pp. 1013-1036 ◽  
Author(s):  
Ashok K. Rathoure
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Ex Situ ◽  
Management Tool ◽  
Contaminated Site ◽  
Anthropogenic Activity ◽  
Toxic Heavy Metals ◽  
Metabolic Degradation

Environmental degradation has become a major societal issue thanks to uncontrolled anthropogenic activity, besides natural factors. Entry of toxic heavy metals and minerals in human system mainly through contaminated water, food and air, leads to overt and insidious health problems. Heavy metal pollution, a global concern today, can be managed by using bioremediation, an eco-friendly alternative. Bioremediation is one of the most promising technological approaches to the problem of hazardous waste. It is a technology for removing pollution from environment, restoring contaminated site and preventing future pollution. Bioremediation can be performed in situ or ex situ. Microorganisms directly degrade contaminants rather than merely transferring them from one medium to another, employ metabolic degradation pathways and can be used in situ to minimize disturbance of the cleanup site. Hence, microorganisms can be effective, economical and non-disruptive tools for eliminating hazardous chemicals. Its advantage generally outweigh the disadvantage, therefore may be used as management tool.

Statistical Analsysis to Evaluate Heavy Metal Pollution in the Air Obatained by Moss Technique in Hanoi and its Surrounding Region

2019 ◽  
Vol 29 (3SI) ◽  
pp. 411
Author(s):  
N. H. Quyet ◽  
Le Hong Khiem ◽  
V. D. Quan ◽  
T. T. T. My ◽  
M. V. Frontasieva ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Statistical Analysis ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Principal Component ◽  
Multivariate Statistical ◽  
Five Factors ◽  
Heavy Metal Elements ◽  
Surrounding Areas ◽  
Potential Pollution

The aim of this paper was the application of statistical analysis including principal component analysis to evaluate heavy metal pollution obtained by moss technique in the air of Ha Noi and its surrounding areas and to evaluate potential pollution sources. The concentrations of 33 heavy metal elements in 27 samples of Barbula Indica moss in the investigated region collected in December of 2016 in the investigated area have been examined using multivariate statistical analysis. Five factors explaining 80% of the total variance were identified and their potential sources have been discussed.

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