Q1

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

• Toxicology

• Pollution control chemistry

• Analytical chemistry

• Environmental chemistry

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

• Molarity (M)

• Percent (%)

• Parts per million (ppm)

• Normality (N)

What is the applied analytical chemistry concerning environmental pollutants?

• Environmental chemistry

• Pollution control chemistry

• Analytical chemistry

• Environmental analytical chemistry (EAC)

Which type of matrices are diverse in environmental analytical chemistry?

• Air, water, soil, and many others

• Only air and water

• Only soil and sediment

• Only hazardous waste and biological specimen

Why is sample preparation critical in environmental analytical chemistry?

• To speed up the process

• To decrease the accuracy of the procedure

• To increase the cost of analysis

• To remove interference and concentrate chemicals of interest

What is essential when dealing with a large number of samples in environmental monitoring?

• Low cost

• Sample contamination

• Automation

• Manual efforts

Which organization publishes consensus methods for environmental sampling and analysis?

• EPA

• ASTM

• NIOSH

• FDA

What is the main idea behind Data Quality Objectives (DQOs) in environmental sampling?

• To collect data without any planning

• To ignore regulatory constraints

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

• To collect the maximum amount of data

What is the purpose of developing good DQOs in environmental sampling?

• To increase the budget and resources needed

• To provide answers with high uncertainty

• To support decision-making with quality data

• To collect irrelevant data

What is the ultimate representativeness in environmental sampling?

• How well the data accurately and precisely represent a characteristic of a population

• How well subsampling techniques are during analysis

• How well the overall data collection design represents a characteristic of a population

• How well a sample collected represents the characteristic properties of the sampling point