1 Stir the heavy cream into the ice cream base.  Chill completely: Leave the ice cream base over the ice water bath, stirring occasionally, until it's completely chilled. This will take about 20 minutes. Alternatively, cover the bowl with the base and chill in the fridge for 3 hours or overnight.
Two other sources of arsenic, especially of some concern for children, is arsenic in groundwater and subsequently, in rice that is grown in such groundwater. Rice is a common food for children but to date, there are no regulations about the levels of arsenic that are considered safe for consumption.
In drinking water. Drinking water is an important and potentially controllable source of arsenic exposure. In fact, drinking water is a major source of arsenic exposure in some parts of the world. In parts of Taiwan, Japan, Bangladesh, and western South America, high levels of arsenic occur naturally in drinking water.