关键词: 沉积物, 沉积物, 钙离子, 可交换态磷, 无机磷

Abstract: To understand the status of people’s daily tea-drinking, an investigation was carried out on the selection of tea variety, soaking time, drinking habits and drinking volume in Qingdao City. The results showed that there were obvious differences among different consumers in tea type selection, green tea was favored by the highest percentage of consumers, 49% of the total survey number, the order from high to low was: green tea> black tea> oolong tea> pu-erh tea. On tea consumption amount, the proportion of daily consumption of 5 g accounted for the most. Tea soaking of most consumers was usually 3 to 4 times per day, soaking time was generally between 30 s and 50 s. On the daily consumption, most consumers drank 3- 6 cups a day. As estimated by six cups of tea, catechin daily intake was 675.0 mg, this value was low, failed to reach the standard healthy tea drinking. The above results showed that Qingdao residents mainly drank green tea, this might be affected by local Laoshan green tea production, the tea consumption was relatively reasonable. But the understanding of health medicinal value of catechin was deficient. In the future, consumers’understanding of drinking tea in a healthy way should be promoted by attaching equal importance to both flavor and healthy contents.