The main trace elements polluting the soil were Zn, As, Pb and Cu.
"They would be helping, in the main, tracing people who were difficult to find for whatever reason, that kind of area".
It can determine quickly at the ppm level for the main trace elements contained in ancient lead alloys: As, Ag, Bi, Cd, Cu, Ni, Sb, and Sn.
In this work, a rapid and efficient procedure named ultrasound meliorated dispersive micro solid-phase extraction followed by high performance liquid chromatography-ultra violet detection (US-D-μSPE-HPLC-UV) was developed for the pre-concentration of the main trace anti-hypertensive drugs in complex matrices.
Fluoride occurs as natural constituent and is one of the main trace elements in groundwater.
Fluoride (F−) is one of the main trace elements in groundwater, which generally occurs as a natural constituent.
One of the main trace elements in groundwater is fluoride, which generally occurs as a natural constituent.
Fluoride (F) can be considered as one of the main trace element in groundwater where it is occur generally as natural constituent.
We found a sharp velocity gradient across the Ushikubi fault, a major strand of the Atotsugawa faults system, rather than the main trace of the Atotsugawa fault.
In Fig. 7, we observe a remarkable change in the LOS velocity across the Ushikubi fault, a major strand of the Atotsugawa fault system (Fig. 1), rather than the main trace of the Atotsugawa fault.
