Methods For Heavy Metal Analysis

A heavy metal analysis can be a useful tool for evaluating soil contamination. It determines the amount of elements in a sample, which indicates the dispersion and level of contamination. Fortunately, there are several methods available for environmental analysis. In this article, we will discuss some of them.

Methods to analyze heavy metals

Inductively Coupled Plasma Mass Spectroscopy (ICP-MS)

ICP-MS is a method for quantitative analysis of heavy elements. It uses a laser ablation system to analyze solid samples, requiring minimal sample preparation. The method has a single side-effect, minor depletion of the sample material. However, this side-effect is acceptable for most applications.

ICP-MS is a highly sensitive method for heavy metal analysis, and it is widely used for determining concentrations of elements. The method works by introducing a fine aerosol of the sample to a plasma containing 6000-10,000 K. The plasma causes the atoms of the analyte to be ionized at the same time. The ions are then sorted and quantified.

The ICP-MS is capable of detecting the smallest particles, and it is also able to detect elements with very low ppt (parts-per-trillion) levels. Although the method does not have the accuracy of ICP-OES, it is able to detect elements with a much lower ppt (parts-per trillion).

ICP-MS is a fast and reliable technique for elemental analysis. It is particularly useful for measuring the isotopic ratios of elements with multiple isotopes. Click here to learn more about isotopes. Its high speed and low detection limits make it a highly versatile analytical tool. Because of these characteristics, ICP-MS is considered a mature technique that requires strict quality control.

ICP-MS is used in both primary and secondary tissue analysis. It can also be used to analyze inorganic nanoparticles. The technique has shown promising results for simultaneous determination of the concentration and size of inorganic nanoparticles in environmental and food samples.

Single-particle ICP-MS is also capable of detecting single-element elements in a single sample. It has a high degree of sensitivity, and it can also distinguish between particulate and ionic forms of analyte.

ICP-MS has numerous applications, and is one of the fastest growing trace element techniques. It was first commercialized in 1983, and today, over 16,000 systems are installed worldwide. This technology is used for industrial, pharmaceutical, environmental, and nuclear applications.

ICP-MS is the fastest elemental analysis technique available today. It can detect almost every element in the periodic table in parts per billion concentrations. This technology works by passing small amounts of material into plasma, which operates at approximately 8000 degrees Celsius. The plasma is then cooled and a mass spectrometer separates the sample ions according to their mass/charge ratio.

Atomic absorption spectroscopy

Atomic absorption spectroscopy (AAS) is another analytical technique used in this field. The technique is suitable for identifying and determining the concentrations of several metals. Table 3 provides examples of samples that are analyzed using AAS. Lead and cadmium are among the metals that have been determined in this way.

Atomic absorption spectroscopy is a technique that uses light to determine the concentration of specific metal atoms in a liquid or solid. The light is excited by a specific wavelength and the atoms in the sample absorb energy. The amount of energy absorbed is proportional to the number of atoms in the sample. The sample is then compared to a standard solution to determine the concentration of the element.

methods for heavy metal analysis

The advantages of AAS over classical gravimetric methods include increased sensitivity and selectivity. This technique has many applications in mining, oceanographic studies, drinking water, and soil analysis. There are also various types of spectroscopy used in the pharmaceutical industry.  An AAS is used to determine the concentration of contaminants in soils and other materials.

Atomic absorption spectroscopy is also used in clinical samples. This technique can determine the concentrations of various materials in human muscle, liver, hair, and brain tissue. It can also help determine the levels of mercury in fish. Mercury is an extremely toxic element that can build up in the environment and pose a risk to the food chain.

Methods to analyze heavy metals

Determining the level of metals in the environment is essential in creating an action plan to help mitigate their presence. Methods of heavy metal analysis are a major part of environmental pollution control. They can help ensure that toxic metals are not present in drinking water and are a reliable indicator for pollution prevention. Methods to analyze metals are widely used for monitoring the presence of heavy metals in a wide range of samples, from soil to solid waste.

The first step is to identify the metals that are present in a particular sample. This will determine their concentration. Using inter-element analysis, these metals are compared with the levels in waste water. If the correlations are high, the source of the heavy metals is likely to be anthropogenic.

How Does Water Filtration Work?

The reality is that drinking water has contaminants, and that’s something you have to address to ensure the safety of your family. The good thing is you can address this by simply investing in a good water filtration system. The following will help you understand how one would work.


Microfiltration Goes First

Okay, there are many water filtration systems out there to choose from. Some of these systems are whole-house systems you can have installed and will filter all of the water going into your home. The drawback is that these systems will have to be uninstalled if you decide to move to a new home.

Those who value portability may want to consider smaller water filtration that you can take with you wherever you go. Whatever you choose, the internal process of each water system normally starts with microfiltration. A reliable water filter system is going to have a complex filtration system with millions of pores to destroy potential contaminants like parasites, cysts, bacteria, herbicides, pesticides, and heavy metals, just to name a few things.

The microscopic pores do not allow pathogens and contaminants to pass through. Those contaminants become trapped within the filter. Of course, this is the reason your filters are going to have to be replaced sooner or later. The amount of times you replace your filter depends on how often the filter is used and the construction of the filter itself.

Adsorption is Key

The second step water filters take to ensure that your water is as clean as possible is adsorption. This is a process where an ionic barrier is formed to help the microscopic porous filter work more effectively.

The truth is some contaminants are a little smaller than the tiny pores of the porous filter. These contaminants could make their way out of the first stage without this second stage. The barrier seems to be strong enough to make contaminants like submicron viruses stop in their tracks. It also helps stop iodine or chlorine, both of which are quite common in tap water.

You should remember that the metals that could be in your water such as cadmium, copper, lead, and mercury are also extracted at this point. These questionable heavy metals are extracted through an Ion exchange process, thanks to the electronically charged barrier formed within the filter. Remember that all filters are not this sophisticated, so make sure you find out if the filter you are considering removes heavy metals.


There is no way you want to allow heavy metals to contaminate your home. A high concentration of these metals can lead to all sorts of other issues, such as organ damage. Some say that prolonged exposure to these metals could put people at risk of developing some types of cancer. Dangers like these shouldn’t plague your mind, and they don’t have to with the help of a good filter.

A Different Method

One more thing that needs to be pointed out is that good quality water filters usually use the long contact period filtration method. Okay, most water filters do what they are supposed to by relying on the water pressure in your home. In essence, the water pressure in your home pushes water through the filtration system, which is how contaminants are removed.

Technically, this type of filtration isn’t bad, and it is effective enough to give you clean water, but the long contact period filtration system takes another approach. What these types of filters do is allow water to flow through the first stage using gravity rather than pressure.

Gravity is a little slower, meaning the water has a long contact period as opposed to regular filters where the water shoots through the filter. Yes, this kind of filtration is a lot slower, but the results are much more impressive. You’d be surprised how many contaminants make it through a filtration system that relies purely on pressure. If you want to give your family the best clean water you can give, then be sure to choose a long contact period filtration system.

Now that you know how water filters work and why they are so important in living a healthy life, you can begin your search. The best thing is you won’t need to worry about buying water from the store nor will you have to pollute the earth with dozens of water bottles that you have to discard often.