The phrase "added to the quantity" is correct and usable in written English.
It can be used when discussing an increase or addition to a specific amount or measurement in various contexts, such as mathematics, finance, or inventory.
Example: "The total cost will be calculated by adding the tax to the quantity of items purchased."
Alternatives: "increased by the amount" or "supplemented by the total".
Over the past decade we have seen considerable investments in high throughput screening which adds to the quantity of data available [1].
In addition, the flooding of vast areas of normally dry land surfaces probably also resulted in increased MeHg production, adding to the quantities of MeHg exported from these watersheds.
Weather conditions, says McKinlay, could hardly have been worse, but the crew and staff worked throughout the night, in pitch darkness and driving snow, to add to the quantities of rations and equipment already stashed on the ice.
Equation 4 denotes that the left quantity for each commodity and distributor in each period can be calculated by the sum of transported quantities to customers subtracted from the sum of transported quantities to a distributor added to the left quantity in the previous period.
Pb deposited by human activity onto and retained by surface soils has been added to the relatively small quantities of Pb naturally occurring in the soil.
The following has been added to the Results section: "The quantities of actin and PP1 recovered in complex with PPP1R15A were sensitive to the salt concentration of the buffers used.
The crucial elements that have to be added to the soil in considerable quantities in the form of fertilizer are nitrogen, phosphorus, and potassium, in each case in the form of a suitable compound.
The liquid fraction was added to the reactors in small quantities, increasing the concentration with each addition until a final concentration of 80% liquid fraction was reached with respect to the substrate/sludge relation (owing to time limitations, reaching 100% was not possible).
MeJA (200 μM) was then added to the cultivation media; an equal quantity of ethanol was used as the control.
However, quantities added to the COPR, to provide an excess of the reducing Fe species, would potentially pose a challenge to effective injection.
