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1. Semiquantitative naked-eye detection of Cu(ii) with a standard colorimetric card via a hydrogel-coated paper sensor

Author:
Fan, Kaiqi; Wang, Xiaobo; Yang, Haoran; Gao, Lijun; Han, Guanglu; Zhou, Liming; Fang, Shaoming
Source:
Analytical methods 2020 v.12 no.12 pp. 1561-1566
ISSN:
1759-9679
Subject:
heavy metals,   etc   ; copper; ions; pH;     Show all 4 Subjects
Abstract:
... A new type of hydrogel-coated paper sensor was developed for the semiquantitative and naked-eye detection of Cu²⁺ ions with high selectivity and good regenerability. The paper sensor showed a continuous color change from colorless to blue, resulting in semiquantitative naked-eye detection. Furthermore, similar to the classical pH test paper, a standard colorimetric card was used in the visual dete ...
DOI:
10.1039/d0ay00038h

2. Retraction Note: Levels of heavy metals in the straightfin barb Enteromius paludinosus (Peters 1852) from River Malewa, Naivasha, Kenya

Author:
Ngesa, Elizabeth A.; Otachi, Elick O.; Kitaka, Nzula K.
Source:
Environmental monitoring and assessment 2020 v.192 no.5 pp. 304
ISSN:
0167-6369
Subject:
heavy metals,   etc   ; Enteromius paludinosus; rivers; Kenya;     Show all 4 Subjects
Abstract:
... The authors have retracted this article [1] because it has been published previously [2] and is therefore a redundant publication. All authors agree with this retraction. ...
DOI:
10.1007/s10661-020-08284-4

3. Specific heavy metal/metalloid sensors: current state and perspectives

Author:
Kim, Hyojin; Jang, Geupil; Yoon, Youngdae
Source:
Applied microbiology and biotechnology 2020 v.104 no.3 pp. 907-914
ISSN:
0175-7598
Subject:
heavy metals,   etc   ; biosensors; electrochemistry; metalloids; physiology; risk;     Show all 6 Subjects
Abstract:
... Heavy metal(loid)s play pivotal roles in regulating physiological and developmental aspects in living organisms depending on their concentration. For example, a trace amount of heavy metal(loid)s is essential for living organisms, but heavy metal(loid)s in high concentrations negatively affect their physiology and development. Because of rapid industrial developments, heavy metal(loid)s have been ...
DOI:
10.1007/s00253-019-10261-y

4. Effects of some heavy metals on thiol compounds in Synechocystis sp. isolates

Author:
Yılmaz, E. Ş.; Öztürk, Ş.; Aslım, B.
Source:
International journal of environmental science and technology 2020 v.17 no.5 pp. 3013-3022
ISSN:
1735-1472
Subject:
heavy metals,   etc   ; Synechocystis; chromium; lead; metal tolerance; nickel; thiols; toxicity;     Show all 8 Subjects
Abstract:
... The study aims to investigate the role of protein-bound, nonprotein and total thiols in metal resistance of Synechocystis isolates exposed to Ni(II), Cr(IV) and Pb(II). Synechocystis sp. BASO403 and BASO404 were investigated with regard to their exposure to 15 ppm Ni(II), 5 ppm Cr(VI) and 100 ppm Pb(II) for metal toxicity and thiol production. Each isolate was effected by metals when compared with ...
DOI:
10.1007/s13762-020-02709-w

5. Rapid determination of cadmium in rice by portable dielectric barrier discharge-atomic emission spectrometer

Author:
Jiang, Jie; Li, Zhaojie; Wang, Yingying; Zhang, Xiangnan; Yu, Kai; Zhang, Hong; Zhang, Jing; Gao, Jing; Liu, Xiangyu; Zhang, Hengnan; Wu, Wenhai; Li, Na
Source:
Food chemistry 2020 v.310 pp. 125824
ISSN:
0308-8146
Subject:
heavy metals,   etc   ; cadmium; detection limit; foods; rice; spectrometers;     Show all 6 Subjects
Abstract:
... In this work, a home-made portable dielectric barrier discharge-atomic emission spectrometer (DBD-AES) was explored to the determination of heavy metal in foodstuffs. A rapid and simple method was developed for Cd determination in rice based on this instrument. Rice was pretreated with diluted acid dissolution without complex operations and apparatus. The detection time by DBD-AES is about 3 min a ...
DOI:
10.1016/j.foodchem.2019.125824

6. Mechanochemical immobilization of heavy metals in contaminated soils: A novel mathematical modeling of experimental outcomes

Author:
Concas, Alessandro; Pisu, Massimo; Cao, Giacomo
Source:
Journal of hazardous materials 2020 v.388 pp. 121731
ISSN:
0304-3894
Subject:
heavy metals,   etc   ; energy; mathematical models; mechanochemistry; milling; polluted soils;     Show all 6 Subjects
Abstract:
... Mechanochemical processing to immobilize heavy metals in contaminated soils has been proposed few years ago. The corresponding experimental results have shown that, under specific operating conditions, the mechanical energy provided by suitable ball mills, can greatly reduce heavy metals mobility without the addition of any reactant. Such results, together with the extreme simplicity of the propos ...
DOI:
10.1016/j.jhazmat.2019.121731

7. Chromium (III) coordination capacity of chitosan

Author:
Ganglo, Caroline; Rui, Jilong; Zhu, Qiufeng; Shan, Jiaqi; Wang, Zhuoying; Su, Fan; Liu, Dagang; Xu, Jianqiang; Guo, Mengna; Qian, Jun
Source:
International journal of biological macromolecules 2020 v.148 pp. 785-792
ISSN:
0141-8130
Subject:
heavy metals,   etc   ; adsorption; chitosan; chromium; freeze drying; metal ions; models;     Show all 7 Subjects
Abstract:
... Polycationic chitosan has a strong coordination to heavy metal ions due to its multifunctional hydroxyl and amino groups. However, due to the fast and facile dissolution of chitosan in acidic medium, it is difficult to measure the exact adsorption amount or coordination capacity accurately. In this work, a simple method of lyophilization plus ethanol-washing was employed to separate and purify chi ...
DOI:
10.1016/j.ijbiomac.2020.01.203

8. Applications of electrochemical sensors and biosensors based on modified screen-printed electrodes: a review

Author:
Beitollahi, Hadi; Mohammadi, Sayed Zia; Safaei, Mohadeseh; Tajik, Somayeh
Source:
Analytical methods 2020 v.12 no.12 pp. 1547-1560
ISSN:
1759-9679
Subject:
heavy metals,   etc   ; analytical methods; biosensors; electrodes; pollution; prototypes;     Show all 6 Subjects
Abstract:
... The focus of this report is electroanalysis performed via screen-printed electrodes. All the basic characteristics required in this field are taken into account, including the fundamental assessments of screen-printed materials used as electrodes, the use of testing electrode prototypes in the laboratory, fundamental and progressive studies on different electrode fabrication procedures, and their ...
DOI:
10.1039/c9ay02598g

9. The improved methods of heavy metals removal by biosorbents: A review

Author:
Qin, Huaqing; Hu, Tianjue; Zhai, Yunbo; Lu, Ningqin; Aliyeva, Jamila
Source:
Environmental pollution 2020 v.258 pp. 113777
ISSN:
0269-7491
Subject:
heavy metals,   etc   ; algae; bacteria; biomass; biosorbents; biosorption; fungi; nanomaterials; pollution;     Show all 9 Subjects
Abstract:
... For decades, a vast array of innovative biosorbents have been found out and used in the removal of heavy metals, including bacteria, algae and fungi, etc. Although extensive biological species have been tried as a biosorbent for heavy metals removal, for removal efficiency or economy efficiency limited, it has failed to make a substantial breakthrough in practical application. Thus, many improved ...
DOI:
10.1016/j.envpol.2019.113777

10. Coloration of colloidal polymer particles through selective extraction of Mie backscattering for cation-responsible colorimetric sensors

Author:
Lee, Seung-Jea; Kumar, Santosh; Choi, Jin Woo; Lee, Jae-Suk
Source:
Journal of colloid and interface science 2020 v.560 pp. 894-901
ISSN:
0021-9797
Subject:
heavy metals,   etc   ; colloids; color; colorimetry; metal ions; pH; polymers;     Show all 7 Subjects
Abstract:
... Mie backscattering-based coloration of water-dispersed polymer particles is investigated. Diluted colloids and light absorber-added colloids are individually prepared to study the scattering properties. Light absorber-added colloids show ~2.9-fold higher colour saturation than diluted colloids because of the effective elimination of Mie forward scattering. Mechanism of selective extraction of Mie ...
DOI:
10.1016/j.jcis.2019.10.073

11. Correction to: Spatial distribution of heavy metals and their potential sources in the soil of Yellow River Delta: a traditional oil field in China

Author:
Miao, Xiongyi; Hao, Yupei; Zhang, Fawang; Zou, Shengzhang; Ye, Siyuan; Xie, Zhouqing
Source:
Environmental geochemistry and health 2020 v.42 no.2 pp. 709
ISSN:
0269-4042
Subject:
heavy metals,   etc   ; oil fields; river deltas; soil; China; Yellow River;     Show all 6 Subjects
Abstract:
... In the original publication of the article, the sixth author name “Zhouqing Xie” has been misspelt. The correct name is given in this correction. The original version of this article was revised. ...
DOI:
10.1007/s10653-019-00243-4

12. Synthesis of core-shell UiO-66-poly(m-phenylenediamine) composites for removal of hexavalent chromium

Author:
Wang, Haiying; Hou, Lanjing; Shen, Yujun; Huang, Lei; He, Yingjie; Yang, Weichun; Yuan, Tao; Jin, Linfeng; Tang, Chong-Jian; Zhang, Liyuan
Source:
Environmental science and pollution research international 2020 v.27 no.4 pp. 4115-4126
ISSN:
0944-1344
Subject:
heavy metals,   etc   ; adsorption; chromium; nanocomposites; nanomaterials; oxidation; polymers; surface area;     Show all 8 Subjects
Abstract:
... The present research developed a direct in situ heterogeneous method to synthesize UiO-66-poly(m-phenylenediamine) core-shell nanostructures by inducing assembly of m-phenylenediamine radical on UiO-66 surfaces. The strong interaction between negative charged UiO-66 and positive radical from the oxidation of monomer is the major driving force. The produced UiO-66-poly(m-phenylenediamine) composite ...
DOI:
10.1007/s11356-019-07070-1

13. A novel evaluation model for heavy-metals pollution in soil based on connection numbers and Dempster–Shafer theory

Author:
Liu, Q. Y.; Wang, M. W.; Dong, H.; Shen, F. Q.; Jin, J. L.
Source:
International journal of environmental science and technology 2020 v.17 no.1 pp. 541-552
ISSN:
1735-1472
Subject:
heavy metals,   etc   ; case studies; models; risk; soil pollution; uncertainty analysis;     Show all 6 Subjects
Abstract:
... The evaluation of heavy-metals pollution in soil involves with various uncertainty factors. Although the normal cloud model provides an idea for dealing with the randomness and fuzziness of indicators for the evaluation of heavy-metals pollution in soil, it distorts data fusion and cannot simulate the distribution state of evaluation indicators in a finite interval. Herein, a novel cloud model cou ...
DOI:
10.1007/s13762-019-02453-w

14. Correction to: Intelligent-activated carbon prepared from pistachio shells precursor for effective adsorption of heavy metals from industrial waste of copper mine

Author:
Nejadshafiee, Vajihe; Islami, Mohammad Reza
Source:
Environmental science and pollution research international 2020 v.27 no.2 pp. 1640-1649
ISSN:
0944-1344
Subject:
heavy metals,   etc   ; adsorption; carbon; copper; industrial wastes; pistachios;     Show all 6 Subjects
Abstract:
... The original publication of this paper contains a mistake. ...
DOI:
10.1007/s11356-019-07541-5

15. Editorial of the VSI “Antibiotics and heavy metals in the environment: Facing the challenge”

Author:
Núñez-Delgado, Avelino; Zhou, Yaoyu; Necibi, Chaker; Xu, Yanbin; Fernández-Calviño, David
Source:
The Science of the total environment 2019 v.678 pp. 30-32
ISSN:
0048-9697
Subject:
heavy metals,   etc   ; antibiotics; databases; pollutants;     Show all 4 Subjects
Abstract:
... The Virtual Special Issue (VSI) “Antibiotics and Heavy Metals in the Environment: Facing the Challenge” received more than 100 submissions from research teams around the world. Finally, more than 50 papers were accepted and published. These very interesting research papers allow going ahead in the knowledge of different aspects which determine the fate of antibiotics and heavy metals in the enviro ...
DOI:
10.1016/j.scitotenv.2019.04.421

16. Multi-colour bipolar electrochemiluminescence for heavy metal ion detection

Author:
Moghaddam, Mohammad Reza; Carrara, Serena; Hogan, Conor F.
Source:
Chemical communications 2019 v.55 no.8 pp. 1024-1027
ISSN:
1364-548X
Subject:
heavy metals,   etc   ; chemical reactions; electrochemiluminescence;     Show all 3 Subjects
Abstract:
... We report a new approach to heavy metal ion detection based on bipolar electrochemiluminescence (BP-ECL), which is simple and low cost yet highly sensitive. By using potential-resolved multicolour electrochemiluminescence (3D ECL) as the sensor readout, both qualitative and quantitative information on the sample is obtained. ...
DOI:
10.1039/c8cc08472f

17. An overview on heavy metal resistant microorganisms for simultaneous treatment of multiple chemical pollutants at co-contaminated sites, and their multipurpose application

Author:
Rahman, Zeeshanur
Source:
Journal of hazardous materials 2020 v.396 pp. 122682
ISSN:
0304-3894
Subject:
heavy metals,   etc   ; bioremediation; chemical pollutants; cost effectiveness; ecological function; metal tolerance; microorganisms; pollution; wastes;     Show all 9 Subjects
Abstract:
... Anthropogenic imbalance of chemical pollutants in environment raises serious threat to all life forms. Contaminated sites often possess multiple heavy metals and other types of pollutants. Elimination of chemical pollutants at co-contaminated sites is imperative for the safe ecosystem functions, and simultaneous removal approach is an attractive scheme for their remediation. Different conventional ...
DOI:
10.1016/j.jhazmat.2020.122682

18. Hyperspectral technique combined with deep learning algorithm for detection of compound heavy metals in lettuce

Author:
Zhou, Xin; Sun, Jun; Tian, Yan; Lu, Bing; Hang, Yingying; Chen, Quansheng
Source:
Food chemistry 2020 v.321 pp. 126503
ISSN:
0308-8146
Subject:
heavy metals,   etc   ; Lactuca sativa; cadmium; hyperspectral imagery; lead; leaves; lettuce; prediction; support vector machines; wavelet;     Show all 10 Subjects
Abstract:
... The aim of this research was to develop a deep learning method which involved wavelet transform (WT) and stack convolution auto encoder (SCAE) for extracting compound heavy metals detection deep features of lettuce leaves. WT was used to decompose the visible-near infrared (400.68–1001.61 nm) hyperspectral image of lettuce sample in the multi-scale transform to acquire the optimal wavelet decompos ...
DOI:
10.1016/j.foodchem.2020.126503

19. Sunlight mediated cadmium release from colored microplastics containing cadmium pigment in aqueous phase

Author:
Liu, Huiting; Liu, Kun; Fu, Heyun; Ji, Rong; Qu, Xiaolei
Source:
Environmental pollution 2020 v.263 pp. 114484
ISSN:
0269-7491
Subject:
heavy metals,   etc   ; cadmium; color; industry; leaching; lighting; microplastics; molecular weight; oxidation; photochemistry; pigments; solar radiation;     Show all 12 Subjects
Abstract:
... The plastics industry is the biggest consumer of cadmium pigments. Little is known about the leaching of hazardous Cd²⁺ from colored microplastics containing cadmium pigment in aquatic systems. Here, we reported the release of Cd²⁺ from different sized microplastics containing cadmium pigment in aqueous phase under simulated sunlight. The release of Cd²⁺ was caused by the photo-dissolution of cadm ...
DOI:
10.1016/j.envpol.2020.114484

20. Aging mechanism of microplastics with UV irradiation and its effects on the adsorption of heavy metals

Author:
Mao, Ruofan; Lang, Mengfan; Yu, Xiaoqin; Wu, Renren; Yang, Xiaomei; Guo, Xuetao
Source:
Journal of hazardous materials 2020 v.393 pp. 122515
ISSN:
0304-3894
Subject:
heavy metals,   etc   ; adsorption; microplastics; models; moieties; pollutants; polystyrenes; risk; seawater; ultraviolet radiation; wastes;     Show all 11 Subjects
Abstract:
... Microplastics are formed by the degradation of plastic wastes under the action of physicochemical mechanisms in environment, and they are becoming a new type of pollutant that is attractings global attention. However, research on the aging characteristics and mechanism of microplastics is limited. The aging mechanism of Polystyrene (PS) with UV irradiation under different conditions (air, pure wat ...
DOI:
10.1016/j.jhazmat.2020.122515