Q1

What is the study of the separation, identification, and quantification of the chemical components of natural and synthetic origins?

• Environmental chemistry

• Analytical chemistry

• Pollution control chemistry

• Toxicology

Which concentration unit is commonly used for environmental pollutants present at trace levels?

• Percent (%)

• Parts per million (ppm)

• Normality (N)

• Molarity (M)

What is essential for detecting trace levels of environmental pollutants from complex matrices?

• Simple and quick procedures

• Complex and tedious procedures

• No instrumental analysis required

• No sample preparation needed

In which circumstances may in situ monitoring become the only option?

• Remote chemical measurements

• Soil sampling

• Atmospheric monitoring and effluent from wastewater treatment plants

• Laboratory analysis

What is crucial in the daily work of environmental sampling and analysis?

• Regulatory compliance

• Sample quantity

• Sample variety

• Analytical speed

Which organization published the 129 priority pollutants in water quantity according to the text?

• NIOSH

• EPA

• ASTM

• WHO

Which type of compounds are included in the category of halogenated hydrocarbons?

• Amines

• Phenols

• Alcohols

• Polychlorinated biphenyls (PCBs)

What is the main idea behind Data Quality Objectives (DQOs) according to the text?

• To provide answers with high uncertainty

• To have the least expensive data collection scheme with low uncertainty

• To collect the most expensive data

• To ignore the data quality

What is the purpose of a multidisciplinary team in environmental projects?

• To increase costs

• To complicate the process

• To optimize sampling location and safety

• To slow down the progress

What is an essential element that must be included in a Quality Assurance (QA) program according to the text?

• Skipping audits

• Avoiding maintenance of equipment

• Implementing Good Laboratory Practices (GLPs)

• Not monitoring expiration dates of chemicals