Determination of the concentration and activity of microcystin-LR and degradants after irradiation with 254 nm and 222 nm UV light with Protein phosphatase 2a inhibition assays and high-resolution mass spectrometry using isotope dilution
Microcystin-LR (MC-LR), a cyanotoxin produced during some harmful algal blooms (HABs), can have negative impacts on water ecosystems. Current treatment methods have potential drawbacks: physical removal can cause cell lysis and toxin release, and chemical treatment can cause disinfection byproducts (DBPs). Ultraviolet C (UV-C) treatment can degrade cyanotoxins without producing additional waste in the process. In this study we compared the degradation of MC-LR (initial concentration ~50 ppb) in deionized (DI) water and surface waters by UV-C light emitted from a krypton-chlorine excimer lamp (UV222) versus a low-pressure Hg lamp (UV254). Quantitative analyses of the resulting samples by protein phosphatase 2a (PP2a) inhibition assays and liquid chromatography-high resolution mass spectrometry (LC-HRMS) were completed. The results of these analysis are provided in this data release.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "010:12" ] |
| contactPoint |
{ "fn": "Zachary R Laughrey", "@type": "vcard:Contact", "hasEmail": "mailto:zlaughrey@usgs.gov" } |
| description | Microcystin-LR (MC-LR), a cyanotoxin produced during some harmful algal blooms (HABs), can have negative impacts on water ecosystems. Current treatment methods have potential drawbacks: physical removal can cause cell lysis and toxin release, and chemical treatment can cause disinfection byproducts (DBPs). Ultraviolet C (UV-C) treatment can degrade cyanotoxins without producing additional waste in the process. In this study we compared the degradation of MC-LR (initial concentration ~50 ppb) in deionized (DI) water and surface waters by UV-C light emitted from a krypton-chlorine excimer lamp (UV222) versus a low-pressure Hg lamp (UV254). Quantitative analyses of the resulting samples by protein phosphatase 2a (PP2a) inhibition assays and liquid chromatography-high resolution mass spectrometry (LC-HRMS) were completed. The results of these analysis are provided in this data release. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "Digital Data", "format": "XML", "accessURL": "https://doi.org/10.5066/P9FJWX6Q", "mediaType": "application/http", "description": "Landing page for access to the data" }, { "@type": "dcat:Distribution", "title": "Original Metadata", "format": "XML", "mediaType": "text/xml", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.63e55f4cd34efa0476ade507.xml" } ] |
| identifier | http://datainventory.doi.gov/id/dataset/USGS_63e55f4cd34efa0476ade507 |
| keyword |
[ "Kansas", "Ohio", "USGS:63e55f4cd34efa0476ade507", "cyanobacteria ["blue-green algae"]", "cyanotoxin", "environment", "health", "microcystin", "ultraviolet", "waterworks" ] |
| modified | 2025-02-27T00:00:00Z |
| publisher |
{ "name": "U.S. Geological Survey", "@type": "org:Organization" } |
| spatial | -95.3108, 38.9642, -95.3100, 38.9637 |
| theme |
[ "geospatial" ] |
| title | Determination of the concentration and activity of microcystin-LR and degradants after irradiation with 254 nm and 222 nm UV light with Protein phosphatase 2a inhibition assays and high-resolution mass spectrometry using isotope dilution |
