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EC number: 223-267-7
CAS number: 3794-83-0
Exposure of 14C-HEDP in sterile mineral salts medium
resulted in production of only small amounts of 14CO2 but of
considerable amounts of 14C-labelled products which could be
mineralized very quickly following bacterial inoculation and
subsequent dark incubation (post-incubation). The abiotic
transformation of HEDP to biodegradable products increased
with exposure time.
HPLC analysis of exposed test solutions showed that acetate
was the biodegradable product formed by photodegradation of
HEDP. The amount of 14C-acetate (as % of initial
radioactivity) found after exposure of 14C-HEDP in sterile
solutions corresponded very well to the 14CO2 evolved after
bacterial inoculation and subsequent dark incubation
(post-incubation). On the other hand, the amount of
14C-HEDP after exposure was quantitatively comparable with
the 14C-radioactivity remaining in solution after
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