采样和方法①采样:1981年8月设立五个采样点.分别在县国营食堂、百货零售部、蔬菜市场,县银行及本站收的化验费五个点上,每个点采20份,即从壹分至拾元每种货币各采两份,五个点共计100份,其中硬币30枚,纸币70张。②样品处理:用高压灭菌棉签沾无菌生理盐水,在币正反两 Sampling and Methods ① Sampling: Five sampling points were set up in August 1981. Twenty sampling points were collected at each of five points in the county state-run canteen, retail department of the department store, vegetable market, county bank and the laboratory. That is, from one cent to ten yuan for each currency pick two, five points a total of 100, of which 30 coins, 70 notes. ② sample processing: Sterilized cotton swab with sterile saline, both positive and negative in the currency