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- Heibati, Masoumeh, 1986, et al.
(author)
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Assessment of drinking water quality at the tap using fluorescence spectroscopy.
- 2017
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In: Water research. - : Elsevier BV. - 1879-2448 .- 0043-1354. ; 125, s. 1-10
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Journal article (peer-reviewed)abstract
- Treated drinking water may become contaminated while travelling in the distribution system on the way to consumers. Elevated dissolved organic matter (DOM) at the tap relative to the water leaving the treatment plant is a potential indicator of contamination, and can be measured sensitively, inexpensively and potentially on-line via fluorescence and absorbance spectroscopy. Detecting elevated DOM requires potential contamination events to be distinguished from natural fluctuations in the system, but how much natural variation to expect in a stable distribution system is unknown. In this study, relationships between DOM optical properties, microbial indicator organisms and trace elements were investigated for households connected to a biologically-stable drinking water distribution system. Across the network, humic-like fluorescence intensities showed limited variation (RSD = 3.5-4.4%), with half of measured variation explained by interactions with copper. After accounting for quenching by copper, fluorescence provided a very stable background signal (RSD
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- Hjelm-Wallén, Lena, et al.
(author)
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Dags att införa en modern typ av värnplikt
- 2016
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In: Svenska dagbladet. - 1101-2412. ; :2016-01-19
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Journal article (pop. science, debate, etc.)abstract
- Hoten mot dagens samhälle är betydligt bredare än det rent militära. Vi är väl medvetna om att civilsamhället gör stora insatser. Men än fler borde delta, skriver flera debattörer som vill att effekterna av någon form av medborgartjänst eller moderniserad värnplikt utreds.
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- Hjelm-Wallén, Lena, et al.
(author)
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Det behövs mer än värnplikt
- 2016
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In: Svenska dagbladet. - 1101-2412. ; :2016-10-07, s. 6-6
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Journal article (pop. science, debate, etc.)abstract
- Människors säkerhet handlar om mycket mer än det rent militära. Därför är det är dags att överväga att införa allmän medborgartjänst för alla medborgare kring tjugoårsåldern.
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