Sampling - Field Sampling: Principles and Practices in Environmental Analysis - page 132

5.12.4. Environmental Sampling
Environmental sampling encompasses a wide range of activities that include not only air,
water, and soil sampling, but also such features as noise

TABLE 5.2 Typical Agricultural Additions to Soil in Order of Decreasing Amounts

Amounts added/ha a

Fertilizer/pesticide Chemical composition

NH 4 + , NO 3 −

Nitrogen 100-300 kg

H 2 PO 4 −

Phosphorus 10-1 00 kg

K +

Potassium 10-100 kg

Herbicides Various 80-900 g

Insecticides Various 200-2000 g

a Amounts do not represent any specific value but are intended to give a general idea of the
amounts used. Specific information about amounts of herbicides and insecticides used can be
found in Crop Protection Reference, New York: Chemical and Pharmaceutical Press, 2003.

FIGURE 5.13 A rock intrusion is evident in the middle of the picture.

pollution. Although different samplers are used (see below), the three-dimensional grid