We also found that nontraffic-related air toxics may be risk factors for ASD, confirming a previous report of a role for dibenzofurans and newly reporting associations for bromoform
, glycol ethers and 1,4-dioxane with ASD diagnosis.
Lidstrom, 1997: Production of bromoform
and dibromomethane by giant kelp: Factors affecting release and comparison to anthropogenic bromine sources.
The reference dose, which is defined as the maximum level of the safe dose, for chloroform (TCM), bromodichloromethane (BDCM), dibromochloromethane (DBCM), and bromoform
(TBM), is reported to be 0.01, 0.02, 0.02, and 0.02 mg/kg-day, respectively .
for "Chemical manufacturing" is distinguished by the compounds such as 3-methyl-1-pentene, bromoform
, dibromomethane, freons, and 1,2-dichloropropane, which are important intermediates in the production of many chlorinated chemicals, mainly solvents, degreasers and pesticides.
The extraction by the bromoform
confirms the presence of these tephras (Figure 6), which maybe attributed to one of the volcanic eruptions taking place between 1100 AD and 1300 AD .
They were prepared in iso-octane for chloroform and n-pentane for bromoform
, bromodichloromethane and dibromochloromethane.
Chloroform (CHC13), Bromodichloromethane (CHC1213r), dibromochioromethane (CHC1Br2), and bromoform
(CHBr3) are the four compounds belonging to the group of THMs.
Figure 3 and Table 2 show the results for five of the 25 VOCs tested (chloroform, carbon tetrachloride, bromoform
, benzene, toluene).
Trihalomethanes are represented by chloroform (CH[Cl.sub.3]), dichlorobro mo methane (CH[Cl.sub.2]Br), chlorodibromomethane (CHCl[Br.sub.2]) and bromoform
nudus larvae is induced strongly by dibromomethane (C[H.sub.2][Br.sub.2]), but is not affected by dibromochloromethane (CHCl[Br.sub.2]) or bromoform
(CH[Br.sub.3]) (Taniguchi et al.
Initially sink float tests were carried out with Bromoform
(2.89 sp.gr) to assess the total heavy minerals present.
Whereas reaction with a catalytic amount of bromine or bromoform
in [CCl.sub.4], isomerization occurred.