(2) Special
Samples
Note that the Bouguer-Beer law mentioned in Appendix “b”
is not applicable to the following special samples.
•
Fluorescing
sample
•
Significantly turbid sample
In measurement of a solid sample such as glass plate, the
energy of beam radiation undergoes a loss (r) due to
reflection on the surface of solid substance. This case can
be expressed by (Equation 4). “r” varies depending on the
reflectance of substance.
r
I
I
c
t
−
=
⋅
⋅
−
l
ε
10
0
.........(Equation 4)
APPENDIX - 7