4.2. Environmental Forensics

So, we will start looking at monitoring. We will take some time, so some of these concepts that you have looked at it preliminary in a very simple fashion will also apply here. So, monitoring is the main step because anything we want to do, we have to measure. The first step in the environmental sequence of things that we talked about is monitoring.

Monitoring is the initial step in understanding and managing environmental issues. It involves measuring different environmental parameters to gather data that can help us make informed decisions. Before taking any actions, we need to have clear measurements about what is happening in the environment. This ensures that our understanding and subsequent actions are based on actual data rather than assumptions.

Think of monitoring like checking the temperature before deciding whether to wear a jacket. You wouldn’t just guess if it’s cold outside; you measure it first to ensure you are making the right choice.

The first thing you want to decide or to discuss is what are the objectives of monitoring. You can’t just go blindly into monitoring scheme without knowing why you are doing it, what is the objective? So objectives could be many things. So as we go further into the topic, we will refine this definition, objectives.

Understanding the objectives of monitoring is crucial. It helps us focus our efforts and resources effectively. Objectives could include assessing water quality for health and safety, identifying pollution sources, or ensuring compliance with environmental regulations. Knowing why we are monitoring guides our methods and the types of data we collect.

Imagine if a doctor performed tests without knowing what the patient was suffering from. Just like doctors have specific objectives when they run tests (iv.g., diagnosing an illness), environmental scientists need to be clear about what they want to measure and why.

So the idea of monitoring is linked to the end use of this and then we say is this particular type of water suitable for a particular application, is it suitable for washing, is it suitable for taking bath or is it suitable for industrial use and so on.

Sampling is a critical part of monitoring. It allows us to collect representative data about different environmental media like water, air, or soil. The choice of where and how we sample determines the quality and relevance of the data we obtain. Understanding the end use of the water—for drinking, bathing, or industrial processes—helps define how we should sample and what criteria we need to use for analysis.

Just like taste-testing a dish requires you to sample a spoonful from different areas of the pot to get a true sense of the flavors, environmental sampling needs to capture data from various spots to accurately represent the whole environment.

So one must ask a question, the objectives of monitoring requires us to ask a question, form the monitoring question, what is it that here we want, so here is the question could be, 'is the water potable?'

Creating specific monitoring questions is a key step in the process. For instance, asking 'Is the water potable?' helps focus the analysis on identifying risks to human health from contaminants. This directs the entire monitoring effort toward understanding whether the water is safe for consumption, leading to targeted sampling and analysis.

Think of this like preparing for a test. You wouldn’t study every topic in your textbook; instead, you'd focus on the chapters relevant to the questions you expect. In environmental monitoring, framing the right questions leads to relevant data collection.

If you determine that a river is polluted, then what will their response be? If you are a user or you are a regulator or an administrator. What are the other questions that you can ask? Find the source of the pollutant, so that becomes a new objective now.

Once monitoring confirms pollution, it leads to further investigation, like identifying the source of the contamination. This step involves deeper analysis and may require new sampling efforts upstream or near potential pollution sources to understand better where the problem originates.

It’s similar to a detective story. Once a crime is identified, the next step is to find out where it originated (the suspect). In environmental science, identifying a pollutant's source is crucial for developing solutions.

So there is a field in monitoring and chemical analysis, which is called as environmental forensics. This is a very niche field, niche field means it is a very specific thing.

Environmental forensics focuses on determining the source and extent of environmental contamination. By analyzing chemical signatures and understanding transport mechanisms, environmental scientists can track pollutants back to their origin—this is critical for enforcement and remediation efforts.

Think of environmental forensics like a forensic investigator at a crime scene using clues (like chemical traces) to find out who committed the crime. In the same way, scientists use environmental forensics to uncover the sources of pollution.

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