Measurement and validation for the twelve month particulate matter study Hong Kong

Summary of PM 2.5 data files for the Twelve Month Particulate Matter Study inHong Kong. Category Database File Database DescriptionI. DATABASE DOCUMENTATIONHKEPDFLDNAME.XLS Defines the field names, measurement units, and formats used in theambient databaseII. MASS AND CHEMICAL DATAHKEPD- PM25.XLS Contains 24-hour PM 2.5 mass and chemical data a,b collected withpartisol filter samplers at three sites on every sixth day between11/06/00 and 10/26/01.III. DATABASE VALIDATIONFLDFLAGS.DOC Contains the field sampling data validation flagsCHEMFLAG.DOC Contains the chemical analysis data validation flags a Includes 40 elements (Na, Mg, Al, Si, P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Br, Rb,Sr, Y, Zr, Mo, Pd, Ag, Cd, In, Sn, Sb, Ba, La, Au, Hg, Tl, Pb, and U) by x-ray fluorescence. b Includes chloride, nitrate, and sulfate by ion chromatography; ammonium by automated colorimetry; water-soluble sodium and potassium by atomic absorptionspectrophotometry; and organic carbon, elemental carbon, eight carbon fractions (OC1, OC2, OC3, OC4, OP, EC1, EC2, and EC3) by thermal/opticalreflectance following the IMPROVE protocol, and OC and EC by thermal/optical transmittance following theUSEPA STN (Speciation Trends Network) protocol.

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