Yash HVS Station Siting Concept



The placement of air monitoring stations in a network depends upon the nature of the monitoring objectives. Independent of the purely physical aspect of siting, the criteria for placement should be established so that answers to one or more of the following questions can be obtained.

Where are the points of maximum contaminant concentrations?
What is the exposure of the population to air contaminants?
What is the effe

Significance and Interference For Yash HVS


The Yash High volume Sampler is commonly used for the collection of airborne particulate component of the atmosphere. A variety of options available for the High Volume sampler give its broad versatility and allow the user to develop information about the size and quantity of airborne particulate matter.
This test methods measures the atmosphere presented to the sampler with good precision, but the actual dust levels in the atmosphere can vary

PM10 Defined

PM10 is defined as particulate matter (PM) with a mass median aerodynamic diameter less than 10 micrometers (um) – PM10. In other words, these are the (smaller) particles that make it through some type of pre-seperator (removes large particles) and are collected on a sampling medium (filter). The type of pre-seperator dictates the steepness of the collection curve.

Particulate Matter Background and Health Effects

Air pollutants called “particulate matter” include dust, dirt, soot, smoke, and liquid droplets directly emitted into the air by sources such as factories, power plants, transportation sources, construction activity, fires, and windblown dust. Particulates are also formed in the atmosphere by condensation or transformation of emitted gases such as sulfur dioxide, nitrogen oxides, and volatile organic compounds into tiny droplets.
Based on studies of human populations exposed to high concentrat