A high-volume air sampler is commonly used to measure the concentration of:
Correct answer: C. Suspended particulate matter
- A. Noise near an industrial plant
- B. Dissolved oxygen in water
- C. Suspended particulate matter
- D. Chlorine residual in drinking water
Explanation
A high-volume air sampler draws a large quantity of air through a filter, allowing suspended particulate matter to be collected and quantified. It is not a water-quality, noise or chlorine-measurement instrument.
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Environmental engineering examines water supply, water quality, treatment processes, wastewater collection and treatment, solid waste management, air pollution and public health protection. It covers sedimentation, coagulation, filtration, disinfection, biological treatment and disposal methods, while distinguishing drinking-water treatment from sewage treatment and BOD from COD.
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