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AssigneeSichuan University
InventorsXinshen Zhang, Xiaoping Jiang
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A concentrating column useful for elemental analysis of trace metals consists mainly of column body, filtration membranes 6 fixed at the fluid inlet end and the outlet end of the column body, and column packing 8 packed inside the column body, wherein column packing 8 is prepared from the swollen and cleaned macroporous adsorbent resin of high, medium or non-polarity treated with a mixture of 3 mol/L NH4OH-1 mol/L HAC-3.0˜6.0×10−4 mol/L pyridin-(2-azo-4-)resorcin or a mixture of 0.5 mol/L Na2HPO4-1.0˜2.0×10−4 mol/L pyridin-(2-azo-4-)resorcin by dynamic on-column treatment or static immersion treatment. Two types of sample processing devices useful for elemental analysis of trace metals are provided with concentrating column employing the above-mentioned column packing. The concentrating column of the present invention simplifies the sample processing flow and the structure of sample processing device, saves chemical reagent, increases sample processing rate, and particularly prevents the toxic methanol from doing harm to the operator's health.
A concentrating column useful for elemental analysis of trace metals, comprising a column body, filtration membranes fixed at the fluid inlet end and the outlet end of the column body, and column packing packed inside the column body, the column packing is prepared from a swollen and cleaned macroporous adsorbent resin of high, medium or non-polarity treated with a mixture of 3 mol/L NH4OH-1 mol/L HAC-3.0˜6.0×10−4 mol/L pyridin-(2-azo-4-)resorcin or a mixture of 0.5 mol/L Na2HPO4-1.0˜2.0×10−4 mol/L pyridin-(2-azo-4-)resorcin.
A sample processing device useful for elemental analysis of trace metals comprising a concentrating column, a low pressure pump, a switch valve, a washing fluid container, a sample container, a desorption fluid container, and additionally a six-way automatic sampling valve and a transporting pump, wherein:
A sample processing device useful for elemental analysis of trace metals comprising a concentrating column, a low pressure pump, a switch valve, a washing fluid container, a sample container and a desorption fluid container, with the outlet of the low pressure pump being connected to the fluid inlet of the concentrating column via pipe fittings, the inlet of the low pressure pump being connected to the outlet of the switch valve via pipe fittings, and the inlets of the switch valve being connected via pipe fittings to the sample container, the washing fluid container and the desorption fluid container respectively, wherein:
Dependencies are inferred from the claim text.