Water Quality: Trends and Challenges

Vega, Alejandra S.; Lizama, Katherine; Pastén, Pablo

doi:10.1007/978-3-319-76702-4_3

Cited by 11 publications

(6 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…6c – f ). To further demonstrate ROSALIND functionality in complex matrices, additional laboratory tests of freeze-dried copper sensors were performed against Lake Michigan water spiked with copper as well as surface waters from Chile, known to be highly enriched with copper from a combination of geogenic and anthropogenic processes [ 47 ]. We confirmed that the sensors can function with environmental water samples as well, though with some inhibition of fluorescence signal ( Extended Data Fig.…”

Section: Resultsmentioning

confidence: 99%

Cell-free biosensors for rapid detection of water contaminants

et al. 2020

Self Cite

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Cell-free biosensors for rapid detection of water contaminants

et al. 2020

Self Cite

View full text Add to dashboard Cite

“…For example, water quality monitoring throughout the Copiapó River and its tributaries show As concentrations below the Chilean guideline for drinking water of 10 µg/L 185 in most of the river sections, except for the headwaters section and a downstream sector (Piedra Colgada), where the river is fed by highly mature As-enriched groundwater 174 . Similarly, Vega et al 210 reported relatively higher As concentrations in the streams and groundwater in the Loa, Elqui, and Lluta river catchments. This could be attributed to the presence of the mineralized zones in the headwaters area, as in Copiapó River's case, geothermal discharges, as in Loa River, fed by its major As contributor Salado River, originating from ETGF, or dissolution of volcanic glass present in volcanic rocks and ashes.…”

Section: Controlling Factors For As Pathwaysmentioning

confidence: 79%

An appraisal of the principal concerns and controlling factors for Arsenic contamination in Chile

Alam

Mukherjee

Bhattacharya

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Although geogenic Arsenic (As) contamination is well-recognized in northern Chile, it is not restricted to this part of the country, as the geological conditions favoring As release to the human environment exist across the country as well, although not at the same level, based on comparatively fewer studies in central and southern Chile. The present work provides a critical evaluation of As sources, pathways, and controls with reports and case studies from across the country based on an exhaustive bibliographic review of its reported geogenic sources and processes that affect its occurrence, systematization, and critical revision of this information. Arc magmatism and associated geothermal activities, identified as the primary As sources, are present across the Chilean Andes, except for the Pampean Flat Slab and Patagonian Volcanic Gap. Metal sulfide ore zones, extending from the country’s far north to the south-central part, are the second most important geogenic As source. While natural leaching of As-rich mineral deposits contaminates the water in contact, associated mining, and metallurgical activities result in additional As release into the human environment through mining waste and tailings. Moreover, crustal thickness has been suggested as a principal controlling factor for As release, whose southward decrease has been correlated with lower As values.

show abstract

“…Finally, we tested our freeze-dried ROSALIND copper sensor against ambient waters from Chile that are known to be highly enriched with copper from a combination of geogenic and anthropogenic processes [67]. Water samples were obtained from two streams: (1) the Yerba Loca Creek, upstream from Santiago, in the Maipo watershed of Central Chile, and (2) the Toro River, upstream from La Serena, in the Elqui watershed of Northern Chile (Fig.…”

Section: Rosalind Can Be Tuned and Applied To Real-world Water Samplesmentioning

confidence: 99%

Rapid, Low-Cost Detection of Water Contaminants Using RegulatedIn VitroTranscription

Alam

Jung

Verosloff

et al. 2019

Preprint

Self Cite

View full text Add to dashboard Cite

Synthetic biology has enabled the development of powerful nucleic acid diagnostic technologies for detecting pathogens and human health biomarkers. Here we expand the reach of synthetic biology-enabled diagnostics by developing a cell-free biosensing platform that uses RNA output sensors activated by ligand induction (ROSALIND) to detect harmful contaminants in aqueous samples. ROSALIND consists of three programmable components: highly-processive RNA polymerases, allosteric transcription factors, and synthetic DNA transcription templates. Together, these components allosterically regulate the in vitro transcription of a fluorescence-activating RNA aptamer:in the absence of a target compound, transcription is blocked, while in its presence a fluorescent signal is produced. We demonstrate that ROSALIND can be configured to detect a range of water contaminants, including antibiotics, toxic small molecules, and metals. Our cell-free biosensing platform, which can be freeze-dried for field deployment, creates a new capability for point-of-use monitoring of molecular species to address growing global crises in water quality and human health.

show abstract

Water Quality: Trends and Challenges

Cited by 11 publications

References 39 publications

Cell-free biosensors for rapid detection of water contaminants

Cell-free biosensors for rapid detection of water contaminants

An appraisal of the principal concerns and controlling factors for Arsenic contamination in Chile

Rapid, Low-Cost Detection of Water Contaminants Using RegulatedIn VitroTranscription

Contact Info

Product

Resources

About