Relationship between particle size and imaginary refractive index in atmospheric dust

Optically Significant Components of Size Fractionated Dust Samples^a

a The X indicates that the material was present; the symbol—indicates that the material was detectable but present in much lower concentration.
b Specifically montmorillonite, illite, and kaolin group clays.
c The presence of carbon was estimated by other means, as discussed in text.

Imaginary Refractive Indices of Size Fractionated Dust Sample^a

Note: The numbers at the bottom of the table indicate the manufacturers stated diameter range, in micrometers, for each stage of the Andersen sampler.
* Values indicated by the * are less than 0.005.
a Due to a decimal point error in data reduction each of the imaginary indices given in this Table II is a factor of 10 too high.

Table I

Optically Significant Components of Size Fractionated Dust Samples^a

a The X indicates that the material was present; the symbol—indicates that the material was detectable but present in much lower concentration.
b Specifically montmorillonite, illite, and kaolin group clays.
c The presence of carbon was estimated by other means, as discussed in text.

Table II

Imaginary Refractive Indices of Size Fractionated Dust Sample^a

Note: The numbers at the bottom of the table indicate the manufacturers stated diameter range, in micrometers, for each stage of the Andersen sampler.
* Values indicated by the * are less than 0.005.
a Due to a decimal point error in data reduction each of the imaginary indices given in this Table II is a factor of 10 too high.