scholarly journals Optimization of Heavy Metal Sensors Based on Transcription Factors and Cell-Free Expression Systems

2021 ◽  
Author(s):  
Kathryn Beabout ◽  
Casey B. Bernhards ◽  
Meghna Thakur ◽  
Kendrick B. Turner ◽  
Stephanie D. Cole ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Transcription Factors ◽  
Free Expression ◽  
Expression Systems ◽  
Metal Sensors ◽  
Heavy Metal Sensors

Nanomaterials as Heavy Metal Sensors in Water

2021 ◽  
pp. 50-66
Author(s):  
Jayeeta Chattopadhyay ◽  
Nimmy Srivastava
Keyword(s):  
Heavy Metal ◽  
Metal Sensors ◽  
Heavy Metal Sensors

scholarly journals Free Base Porphyrins as Ionophores for Heavy Metal Sensors

Sensors ◽  
2008 ◽  
Vol 8 (8) ◽  
pp. 4995-5004 ◽  
Author(s):  
Dana Vlascici ◽  
Eugenia Fagadar-Cosma ◽  
Elena Pica ◽  
Viorica Cosma ◽  
Otilia Bizerea ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Free Base ◽  
Metal Sensors ◽  
Heavy Metal Sensors

scholarly journals Sensors Applied for the Detection of Pesticides and Heavy Metals in Freshwaters

2020 ◽  
Vol 2020 ◽  
pp. 1-22 ◽  
Author(s):  
Hongyong Xiang ◽  
Qinghua Cai ◽  
Yuan Li ◽  
Zhenxing Zhang ◽  
Lina Cao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Aquatic Ecosystems ◽  
Industrial Revolution ◽  
Limit Of Detection ◽  
Dynamic Change ◽  
Aquatic Life ◽  
Metal Sensors ◽  
Heavy Metal Sensors

Water is essential for every life living on the planet. However, we are facing a more serious situation such as water pollution since the industrial revolution. Fortunately, many efforts have been done to alleviate/restore water quality in freshwaters. Numerous sensors have been developed to monitor the dynamic change of water quality for ecological, early warning, and protection reasons. In the present review, we briefly introduced the pollution status of two major pollutants, i.e., pesticides and heavy metals, in freshwaters worldwide. Then, we collected data on the sensors applied to detect the two categories of pollutants in freshwaters. Special focuses were given on the sensitivity of sensors indicated by the limit of detection (LOD), sensor types, and applied waterbodies. Our results showed that most of the sensors can be applied for stream and river water. The average LOD was 72.53±12.69 ng/ml (n=180) for all pesticides, which is significantly higher than that for heavy metals (65.36±47.51 ng/ml, n=117). However, the LODs of a considerable part of pesticides and heavy metal sensors were higher than the criterion maximum concentration for aquatic life or the maximum contaminant limit concentration for drinking water. For pesticide sensors, the average LODs did not differ among insecticides (63.83±17.42 ng/ml, n=87), herbicides (98.06±23.39 ng/ml, n=71), and fungicides (24.60±14.41 ng/ml, n=22). The LODs that differed among sensor types with biosensors had the highest sensitivity, while electrochemical optical and biooptical sensors showed the lowest sensitivity. The sensitivity of heavy metal sensors varied among heavy metals and sensor types. Most of the sensors were targeted on lead, cadmium, mercury, and copper using electrochemical methods. These results imply that future development of pesticides and heavy metal sensors should (1) enhance the sensitivity to meet the requirements for the protection of aquatic ecosystems and human health and (2) cover more diverse pesticides and heavy metals especially those toxic pollutants that are widely used and frequently been detected in freshwaters (e.g., glyphosate, fungicides, zinc, chromium, and arsenic).

Novel all-state heavy metal sensors and analysis instrument

2008 ◽  
Author(s):  
Men Hong ◽  
Jin Jiyong ◽  
Wang Weiguang ◽  
Wu Guangjian ◽  
Wang Ping
Keyword(s):  
Heavy Metal ◽  
Analysis Instrument ◽  
Metal Sensors ◽  
Heavy Metal Sensors

scholarly journals Heavy metal sensors and sequestrating agents based on polyaromatic copolymers and hydrogels

2020 ◽  
Vol 70 (1) ◽  
pp. 59-72
Author(s):  
Aula A Alwattar ◽  
Athir Haddad ◽  
Joshua Moore ◽  
Mubark Alshareef ◽  
Cian Bartlam ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Sensors ◽  
Heavy Metal Sensors

Periodic Mesoporous Organosilica Films: Key Components of Fiber-Optic-Based Heavy-Metal Sensors

Small ◽  
2010 ◽  
Vol 6 (11) ◽  
pp. 1168-1172 ◽  
Author(s):  
Jenny Du ◽  
Judy Cipot-Wechsler ◽  
Jose M. Lobez ◽  
Hans-Peter Loock ◽  
Cathleen M. Crudden
Keyword(s):  
Heavy Metal ◽  
Fiber Optic ◽  
Periodic Mesoporous Organosilica ◽  
Mesoporous Organosilica ◽  
Metal Sensors ◽  
Heavy Metal Sensors

FMN-Based Fluorescent Proteins as Heavy Metal Sensors Against Mercury Ions

2016 ◽  
Vol 26 (3) ◽  
pp. 530-539 ◽  
Author(s):  
Yuvaraj Ravikumar ◽  
Saravanan Prabhu Nadarajan ◽  
Chong-Soon Lee ◽  
Seunho Jung ◽  
Dong-Ho Bae ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Fluorescent Proteins ◽  
Mercury Ions ◽  
Metal Sensors ◽  
Heavy Metal Sensors

Technology Update: Heavy-metal sensors provide fast detection

1997 ◽  
Vol 31 (9) ◽  
pp. 399A-399A
Author(s):  
Kellyn S. Betts
Keyword(s):  
Heavy Metal ◽  
Fast Detection ◽  
Metal Sensors ◽  
Heavy Metal Sensors
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