Japanese law for dioxin
Dioxin emissions from waste incineration facilities in Japan are regulated under the dioxin control special law. This law requires every facility owner to conduct an emission test at least once a year according to authorized test method JIS K0311. The JIS (Japanese Industrial Standards) covers both dioxin analysis method and sampling method. The latter was revised in 2005 to increase one sampling method of Type I to three different sampling methods of Type I through Type III, which is the so called "cooled probe method" of EN1948. EN 1948. EN is European Standard ( European Norm or Norme ).
Type I
This is the old method. It uses a glass fiber filter with an adsorbent (styrene-divinyl benzene co-polymer). For some reason XAD-2, a popular absorbent, "was not in the case of recommending this".
Type II
Well,
as one can easily imagine, an apparatus requiring chilling liquid in ice or dry
ice might be very troublesome to maintain, so
they used this system which used some special absorbent which I am not acquainted
with.
Type III
Now, as engineers
like to do, it is easier to take care of the problem at the beginning and not at the end. If you use a cooling probe
which reduces the air temperature to 20
degrees or less,
then the liquid can absorb the dioxin at ambient temperature.
Some special use devices have also been developed.
Outdoor sampling device
From Sibata Scientific Technology
The HV-1000R and 700R are samplers intended for outdoor use. These products sample suspended dust in the open face, and provide quantitative analysis of dust concentration and composition. High-accuracy flow rate control is provided by a differential pressure detection system, and instantaneous and cumulative flow rate values are displayed digitally. Reductions in suction flow rate due to increased dust collection are minimized thanks to a constant flow rate function. This product can be used to collect airborne dust by attaching the through pipe. Similarly, it can also be used to collect dioxins by attaching the shuttle tube (tube for polyurethane foam attachment). It is capable of stable, high flow rate sampling, and so can be used under a wide range of conditions as an airborne toxic
.substance sampler
This portable device can handle 800 L/min
It has a shuttle tube with a polyurethane foam filter and quartz fiber filter
