Suspended Particulate Matter Measurement Apparatus and Suspended Particulate Matter Measurement Method Using the Same
First Claim
1. A suspended particulate matter measurement apparatus comprising:
- a filter for collecting particulate matter contained in the atmosphere;
a suction part for suctioning air in the atmosphere at a constant flow rate to cause the particulate matter contained in the atmosphere to be collected by the filter;
an extraction part for extracting a component of the particulate matter collected by the filter, by dissolving the particulate matter into a solvent, and for collecting a resultant solution;
a measurement part for measuring at least one of an amount of nitrate ion and an amount of sulfate ion that are contained in the solution collected by the extraction part, and for outputting a measurement result; and
a recording part for recording the measurement result outputted from the measurement part.
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Accused Products
Abstract
Provided are a suspended particulate matter measurement apparatus capable of automatically measuring a nitrate ion content and a sulfate ion content in the atmosphere, and a suspended particulate matter measurement method using the same. The suspended particulate matter measurement apparatus includes a filter, suction part, extraction part, measurement part, and a recording part. The suction part suctions air in the atmosphere at a constant flow rate to cause particulate matter contained therein to be adsorbed onto the filter. The extraction part extracts components of the particulate matter adsorbed onto the filter, by dissolving the particulate matter into a solvent, and collects a resultant solution. The measurement part measures at least one of a nitrate ion content and a sulfate ion content in the solution collected by the extraction part, and outputs the measurement result. The recording part records the measurement result outputted from the measurement part.
9 Citations
15 Claims
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1. A suspended particulate matter measurement apparatus comprising:
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a filter for collecting particulate matter contained in the atmosphere; a suction part for suctioning air in the atmosphere at a constant flow rate to cause the particulate matter contained in the atmosphere to be collected by the filter; an extraction part for extracting a component of the particulate matter collected by the filter, by dissolving the particulate matter into a solvent, and for collecting a resultant solution; a measurement part for measuring at least one of an amount of nitrate ion and an amount of sulfate ion that are contained in the solution collected by the extraction part, and for outputting a measurement result; and a recording part for recording the measurement result outputted from the measurement part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A suspended particulate matter measurement method using a suspended particulate matter measurement apparatus comprising:
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a filter for collecting particulate matter contained in the atmosphere; a suction part for suctioning air in the atmosphere at a constant flow rate to cause the particulate matter contained in the atmosphere to be collected by the filter; an extraction part for extracting a component of the particulate matter collected by the filter, by dissolving the particulate matter into a solvent, and for collecting a resultant solution; a measurement part for measuring an amount of nitrate ion and an amount of sulfate ion that are contained in the solution collected by the extraction part, for measuring an acidity of the solution, and for outputting measurement results; and a recording part for recording the measurement results outputted from the measurement part, the suspended particulate matter measurement method comprising; a nitrate ion measurement process for measuring the amount of nitrate ion by an absorbance method with which to measure an absorbance of the solution at a predetermined wavelength; an acidity measurement process performed subsequent to the nitrate ion measurement process, for measuring, after a pH indicator being added to the solution, an acidity of the particulate matter by measuring a pH of the solution by an absorbance method with which to measure an absorbance of the solution at a particular wavelength; and a sulfate ion measurement process performed subsequent to the acidity measurement process, for measuring the amount of sulfate ion by barium sulfate turbidimetry.
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Specification