Water sample analysis

Water sample analysis

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Credit: SCOTT BAUER/US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY

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Caption: Water sample analysis. Chemist analysing a water sample using an atomic absorption spectrophotometer to determine the magnesium content. As atoms absorb particular wavelengths of light, the spectrophotometer, which measures light intensity, can identify the presence of particular elements. This experiment is to determine the magnesium content of bottled water. Magnesium is a trace element vital for enzyme activity and the manufacture of nucleic acids.

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Keywords: adult, atomic absorption, biochemistry, biological, biologist, biology, bottled water, caucasian, copper, equipment, human, lab, laboratory, level, levels, machine, male, man, measuring, middle-aged, mineral water, people, person, physiological, physiology, research, researcher, researching, sample, samples, science, scientific, scientist, spectrometer, spectrometry, spectrophotometer, spectrophotometry, studying, trace element, white

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