Concentrations were generally low: the majority of samples had total melamine-related compounds (sum of all four analytes) of <0.05 mg kg−1.
Analyses were conducted for individual analytes, total chlordane/heptachlor related compounds (sum of heptachlor epoxide, oxychlordane, and trans-nonachlor), and total PCBs.
The total of MEL-related compounds (sum of all four analytes) in all samples was below the interim standard of 0.5 mg kg−1 for infant formula products established by Health Canada.
Although moderate yields are logically obtained for each compound, the sum of the isolated compounds represents 70%.
We use the following uninformative prior to filter out structurally impossible molecular formulas: for each compound, the sum of valences has to be greater than or equal to twice the number of atoms minus one; this is one of the "Senior rules" [55].
In a compound, the sum of all the oxidation numbers must equal 0. If there is an ion that has 2 atoms, for example, the sum of the oxidation numbers must equal the ionic charge.
But certain compounds are intrinsically charged; for these compounds, the sum of valences is even.
TVOC: ("total volatile organic compounds") the sum of all contaminants (TCE, PCE, trans-1,2-dichloroethylene, vinyl chloride and benzene) in the drinking water.
The molar ratios of C3 compounds to the sum of C2 and C4 compounds in this temperature range were approximately 2 1 1.5 1 in the former and 3 1 4:1 for Fru, indicating that C3 compounds can be preferentially produced from Fru.
Thus, short training favoured processing of the compound as the sum of its elements (elemental account) while long training favoured its processing as being different from the sum of its elements (configural account).
