is arsenic found in tea
All brewed tea and tea leaves had detectable arsenic with Chinese oolong teas (organic or regular) having the highest levels. Levels in all teas ranged from 0.06 Î¼ gm to 1.12 Î¼ gm/L of tea steeped for 3 minutes to 0.08 to 1.27 Î¼ gm/L of tea steeped for 15 minutes.inerals Found in Tea. In our study 4 cups of tea may supply as much as 1% of daily calcium requirements, 5% of magnesium requirements, 4-5% of daily potassium requirements and 1â1.6% of phosphorus requirements using distilled water. See Table 1.