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Nontarget LC-HRMS maps Dhaka river pollution
Open-science LC-HRMS of 12 sites on four rivers near Dhaka found tens of thousands of chemical features, including urban surfactants, pesticides, and pharmaceuticals, in a rarely monitored South Asian waterscape.
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Why study Bangladesh surface waters?
High population and industry with limited wastewater treatment; few prior emerging-pollutant data.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
Had unbiased nontarget analysis been applied to South Asian rivers before?
Authors say not to their knowledge.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
How many sites and which rivers?
12 sites on Buriganga, Meghna, Shitalakshya, and Turag.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
How many unique chemical features?
26,792 unique features (68.6% of the dataset).
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
Did ionization modes overlap completely?
No—much of each mode was unique, so complementary ionization mattered.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
Where did annotated compounds cluster?
Urban sites; none correlated with more rural sites.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
Which detergent markers tracked cities?
C10-LAS and C11-LAS surfactants.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
Which pesticides reached Level 1?
Chlorpyrifos, diazinon, and malathion.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
How many previously reported pharmaceuticals were seen at all sites?
Seven, including carbamazepine and sulfamethoxazole.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
What open-science goal did they emphasize?
A reproducible LC-HRMS workflow others could adopt.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified
Local industry types flagged as pollution sources?
Textile, manufacturing, pharmaceutical, plus agriculture/aquaculture.
Source: Nontarget Analysis of Polluted Surface Waters in Bangladesh Using Open Science Workflows · DOI · quote verified