Headspace solid-phase micro-extractor for measuring residual quantity of phosphine in grains

The utility model provides a headspace solid-phase micro-extractor for measuring residual quantity of hydrogen phosphide in grains, which relates to the technical field of micro-extraction analysis and comprises a base plate, a case is fixedly connected to the right side of the base plate, a control module is arranged on the surface of the front end of the case, and a mounting plate is fixedly connected to the left side, far away from the case, of the base plate. The novel solvent-free extraction device integrates the novel solvent-free extraction technology of sampling, extraction, concentration and sample injection, and is mainly used for separating, purifying and concentrating samples. The device is simple in structure, high in cost performance, high in extraction recovery rate and fewin adsorption link, overcomes the difficulties of incomplete absorption and negative pressure sampling in the reaction process, and is particularly suitable for analyzing the residual quantity of trace hydrogen phosphide in g