trace amount

基本解释

This paper reports a pulse stripping voltammetry for determining trace amount of silver at non-mercury carbon fiber electrodes.
本文報道了一種使用無汞膜碳纖維微電極測定痕量銀的脈沖溶出伏安法。
This paper describes the atomic absorption method in which the pyrogallol is used as releasing agent to assay directly the trace amount of calcium in calcium tungstate in air-acetylene flame.
本文選用了焦（?）酚作釋放劑，在空氣—乙炔火焰中直接測定鎢酸中的微量鈣。
Trace amount of chromium and nickel was determined using a flow injection on line extraction FAAS system.
本文用流動注射-在線萃取火焰原子吸收法測定了人發中微量的鉻和鎳。

Nuclear dye is just as it sounds: a trace amount of radioactive material is injected intravenously and circulates throughout the bloodstream.
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Griesing's organization vigorously fought the move to phosphate-free until Washington State passed a law in March 2006 limiting the amount of phosphates in household dishwasher detergent sold in that state to 0.5%, or a trace amount, effective July 1, 2010 (in most of the state).
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