Found that the death of worms has increased the concentration of zinc oxide increases. The concentration of ZnO, the worms die percentage 50 (LC50) at 48, 72 and 96 hours was 21.00, 10.17 and 5.90 mg / L, respectively, and at times, the worms die percentage of 50 (LT50. ) The concentration of zinc oxide, 4.795, 5.845, 6.875, 8.755, 11.565 and 14.765 mg / liter is equal 103.01,96.12, 83.02, 79.30, 73.03 and 62.31 hours, respectively, the LT50 has decreased concentrations of zinc. oxide increases
การแปล กรุณารอสักครู่..