The Species and Elements Array Label Sets

When you add, delete, or reorder species The chemical (or non-chemical, such as bacterial or viral) constituents that are stored and transported through an environmental system in a contaminant transport model. In GoldSim, the Species element defines all of the contaminant species being simulated (and their properties). in the Species element, in addition to changing the Species element itself, you are also modifying the Species array label set A special set of array labels that can only be populated and edited via the Species element. and the Elements array label set A special set of array labels that can only be populated and edited via the Species element. It consists of all of the chemical elements (or compounds) specified in the model. As such, it is smaller than or equal to the Species array label set..

The Species and Elements array A collection of variables that share common output attributes and can be manipulated in GoldSim elements or input expressions. label sets are automatically created (and cannot be deleted) when you create a new file with the Contaminant Transport Module. You can use these sets when you define the output attributes for other GoldSim elements (e.g., Data, Expressions, Reservoirs):

In fact, in order to build a contaminant transport model in GoldSim, it is required that you do so. This is because many of the inputs to other Contaminant Transport Module elements (e.g., partition coefficients The ratio of the species’ concentration in a medium to its concentration in the Reference Fluid at equilibrium. Partition coefficients are inputs to Solid and Fluid elements. and solubilities in environmental media Materials (such as water, sand, clay, air) that constitute (are contained within) transport pathways. GoldSim provides two types of elements for defining media: Fluids and Solids., mass boundary conditions in pathways, inventories for sources) require that you enter a vector A one-dimensional array. by species (i.e., a vector with an item for each species) or a vector by element (i.e., a vector with an item for each chemical element).

The items in the Species array label set are the names of the species defined in the Species element. The Elements array label set is created based on the names of the chemical elements that are assigned to the species when you define their properties. If a species is not defined as an isotope, the chemical element name is the species name itself. If a species is defined as an isotope, GoldSim defines the element as the character(s) to the left of the first number in the species ID (e.g., the element name for Am241 would be Am).

Unlike other array label sets in GoldSim, the Species and Elements array label sets cannot be edited from the Array Labels A collection of labels identifying the items of an array. editing dialog accessed by Model | Array Labels. Rather, they can only be edited via the Species element.

Note: You can control the order of items in the Species array label set. However, the order of items in the Elements array label set cannot be changed; the set is always in alphabetical order.

Note: If none of the species are defined as isotopes, the Species array label set and the Elements array label set will have the same number of entries, but may be in a different order. The Elements array label set is always in alphabetical order, while the order of the Species array label set is determined by the user.

Note: If you are using the ICRP database of species data (available only in the RT Module), you will note that the ICRP species are shown (in the ID column) with a hyphen separating the element name from the mass number. However, within the corresponding Species array label set, the hyphen is eliminated (hence, U-238 becomes U238 in the species array label set).