 |
Osobně si myslím, že tady to fakt nepomůže, ono jde totiž spíš o kontext celkového výzkumu - tedy asi o velikost částic:
The aim of this study was to evaluate the air
concentrations of BFRs in three different particle
fractions; respirable, inhalable and btotal dustQ fractions,
in an electronic recycling facility in Sweden. In
addition, the distribution of BFRs within the different
fractions was evaluated. The distribution of BFRs
between different particle fractions will give more
insight on exposure and exposure assessment.
no a to je buhužel asi tak všechno, co o tom v tom článku řeknou (jasně, pak popisují, jak jim to vyšlo a tak) jediné, co mě ještě napadá prozkoumat ty vzorkovače
Sampling of btotal dustQ was done with a modified
version of the NIOSH method 0500 bParticulates, not
otherwise regulatedQ on an open faced 25-mm cassette
(NIOSH, 1994). In this study, a cellulose acetate fibre
filter was used instead of the PVC filter. For respirable
dust, the Swedish sampling standard was used,
recommending separation of respirable dust, according
to the latest international standards, by using a
SKC 2 aluminium cyclone with a 25-mm filter
cassette attached (Swedish standard Institute, 1993).
Inhalable dust was sampled using an IOM sampler, on
a 25-mm filter. Cellulose acetate filters were also used
for the SKC 2 cyclone and the IOM sampler. The
sampling equipment consisted of low flow sampling
pumps adjusted to constant airflow, 2.0 L/min (1.9 L/
min for the respirable fraction), and thereby ensuring
accurate separation characteristics. The IOM sampler
was designed and validated only for personal measurements.
When used for area measurements within
the breathing zone, it needs to be supported by a
surrogate for a torso, which was done in this study
(Fig. 1). |