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Various techniques employed for detecting the presence of pollutants in asbestos

Various techniques employed for detecting the presence of pollutants in asbestos

Jun 13, 2018

Australia has the 2nd highest rate of mesothelioma deaths in the world, following the United Kingdom. Mesothelioma is a rare variety of cancer typically caused by asbestos exposure affecting more than 10,000 people since the beginning of 1980s. According to the cancer experts, more than 25,000 people may succumb to this disease and die from it in the next four decades. Various methods of testing asbestos have been developed to find out the presence of asbestos and the method for asbestos testing Gold Coast professionals use is largely dependent on the type of matrix that is to be analysed.

asbestos testing gold coast

There are several methods of asbestos testing Gold Coast professionals use, and some of the common ones are:

Airborne asbestos:

In order to measure the fiber concentration of airborne samples, Phase Contrast Microscopy or PCM is widely used. This is normally conducted at any asbestos abatement centre, and is routinely applied for personnel monitoring, environmental monitoring and clearance test for small abatement tasks.

This technique has the benefit of faster turnaround time and cost efficiency. This light microscope procedure can operate at magnifications of 400X and is able to resolve fibre particles that are larger than 0.25 microns in diameter.

PCM technique is not utilized for distinguishing asbestos fibres from other fibres like cellulose, mineral wool, fiberglass, gypsum, etc., but this test is proficient in delivering an overall reading of the presence of different types of fibres in the sample.

When fibres smaller than 0.25 microns in diameter are required to be detected and identified, the use of TEM is needed for differentiating the types of fibres.

Transmission Electron Microscopy:

This method of asbestos testing Gold Coast professionals use offers the most sophisticated technology for characterizing various asbestos minerals. It has now become the standard for most airborne investigations that include diagnostic and environmental monitoring tasks and post abatement clearance testing. read more

Composting: What You Need to Know

Composting: What You Need to Know

Jun 11, 2018

Almost everyone knows that composting can help you make naturally-rich garden soil from your kitchen food scraps and yard trimmings. Composting can be done in many ways such as open pit composting, open bins composting, with the use of tumblers, piling, vermicomposting, and using a kitchen scrap bin.

Take Note of the Essential Composting Ingredients

Added to those is a number of environmental factors where the scraps are decomposed, and that includes the microbes responsible for decomposition. Supplying these microorganisms with the appropriate elements and proper physical atmosphere can give you the best and healthy soil for your plants. In this article, you will learn about the important things to consider when you want to produce a good soil by composting.kitchen scrap bin

Microorganisms

There are two common types of microbes used for composting, namely, the aerobic microbes and the anaerobic microbes.

  • Aerobic microbes

Aerobic microorganisms are naturally occurring microbes which make use of oxygen to live and do the composting job. When composting in a kitchen scraps bin, you must make sure that it has enough air holes for proper ventilation. These microbes are already present in the soil and are assisted by other factors to create compost. As they “eat” their way up the pile of kitchen and yard scraps, they produce heat, water, and carbon dioxide.

  • Anaerobic microbes

Unlike aerobic microbes, anaerobic microbes do the composting without depending on oxygen. Just placing food scraps and yard trimmings in a tightly closed kitchen scrap bin or a food scraps bin can decompose the materials. However, the anaerobic composting process can create a foul smell caused by the carbon dioxide, methane gas, hydrogen sulfide produced during the decomposition process. Also, this composting process is much slower than the aerobic process.

Other organisms such as earthworms, spiders, centipedes, snails, and leeches can contribute to the composting process as well as “eat” up the pile into tiny pieces.

Moisture Level

The microbes that do most of the dirty work need water in order to survive. However, it is hard to determine the exact quantity of water to add to ensure that the composting process won’t be undermined. One rule of thumb is simply to add less water when there are green cuttings such as weeds, leaves, and grass you put in. On the other hand, putting in brown materials such as hay and straw will require more water, but not too much. Even when you include mixed paper recycling in your compost, make sure that you add enough water to maintain moisture. read more