LY/T 3110-2019Technical regulations of sampling for economic forest producing environment sampling inspection (English PDF)

3.1 Representativeness

The sampling site selection should be representative, and the economic forest products should be distributed in a large scale in the sampling area; the environmental samples collected should have sufficient Representatively, multiple samples should be collected in the selected area to form a sample to represent the actual situation of the sample in the area.

3.2 Randomness

The samples collected should be collected on a random basis.

3.3 Feasibility

The sampling method, tools used and the number of samples shall meet the testing requirements.

3.4 Impartiality

Sampling should be undertaken by the inspection agency, and at least two sampling personnel should be sent to the site to sample in person. The inspected unit can Sampling is accompanied by the principle of implementation of the plan.

4.1 Sampling plan

According to the requirements of the sampling task, a sampling plan is formulated, and the sampling staff performs sampling according to the plan. The sampling plan should include. sampling location, Scope, sampling personnel, sampling time, sampling object, sample name, quantity, sampling method basis, testing items, etc.

4.2 Sampling preparation

4.2.1 File Class

Relevant documents for sampling tasks, sampling plans, sampling sheets (see Appendix A), sealed sample strips (see Appendix B), official letters from sampling personnel, and Work permit, etc.

4.2.2 Tools

There are but are not limited to sampling bags, labels, earth drills, shovel (pick), wood (bamboo) chips, GPS, tape measure, camera, polyethylene plastic Buckets, carafe, air samplers, etc. Ensure that the utensils are clean and do not cause sample contamination.

4.3 Sampling

Sampling should be carried out in accordance with the established sampling plan, and the sampling staff should consist of at least two people to take samples at the scene.

4.4 Sampling records

Once the samples have been taken, the sampling personnel should fill out the sampling list immediately. Sampling orders and sealed samples must be covered by the sampling staff and the sampled unit Chapter and signed by a representative (individual).

4.5 Sampling techniques

4.5.1 Soil

4.5.1.1 Number of samples

The sampling area is divided according to the principle of relative concentration. Each area of soil is taken as a batch sample.

Table 1 Number of soil samples taken from the producing area

Base area (hm2) Sample batch (mixed sample) Sampling point <=66.67 2 no less than 5 sampling points per sample 66.67 ~ 133.33 3 133.33 ~ 333.33 4 > 333.33 For each increase of 66.67hm2, the sample batch increases by 1

4.5.1.2 Sampling method

In accordance with the provisions of 4.4.3.2.1 and 4.4.7.1 in NY/T 395.

4.5.1.3 Sampling depth and sampling volume

After removing the surface humus layer, according to the depth of the root system of the planted product, the sample point soil was collected within a depth range of 0 cm to 60 cm.

About 0.5 kg of soil was taken out uniformly from bottom to top. The soil samples at each sub-point were mixed uniformly, and 1 kg was bagged as a test sample according to the quarter method.

4.5.2 Irrigation water

Perform as follows.

a) Water point setting.

1) Irrigation canal water source. set a water intake at the water inlet of the irrigation area;

2) Groundwater source. set a water intake at the outlet of the machine well;

3) River water source. set a water intake point on the cross section of the river near the water inlet;

4) Lake (reservoir) water source. Set a water intake point at the pumping point of the machine well.

b) Sampling method.

1) Groundwater. implemented in accordance with 4.4.2.1 of NY/T 396;

2) Canal water. implemented in accordance with 4.4.2.2 of NY/T 396;

3) Rivers, lakes and reservoirs. implemented in accordance with 4.4.2.3 of NY/T 396.

c) Sampling depth and volume.

The sampling depth is 0.3 m to 0.5 m from the water surface. The water sample collected at each water source point is taken as a batch sample.

The dosage is 3 to 3.5 times. Generally, 50 mL to 2000 mL can be collected to meet the requirements.

4.5.3 Air

4.5.3.1 Sampling point requirements

According to the provisions of 4.2.2.2 in NY/T 397.

4.5.3.2 Sampling height

According to the provisions of 4.2.2.6 b) in NY/T 397.

4.5.3.3 Number of sampling points

According to the provisions of 4.3 in NY/T 397.

4.5.3.4 Sampling time

According to the provisions of 4.4.5.1 "Filtration Membrane Method" in NY/T 397.

4.6 Sample dispensing

4.6.1 Dividing

Soil and irrigation water samples are packaged separately and divided into two equal parts, one for the test sample and the other for the backup sample.

4.6.2 Sample loading

4.6.2.1 Detection of inorganic indicators

Soil samples should be placed in cotton sampling bags or plastic bags, and irrigation water samples should be placed in polyethylene plastic buckets.

4.6.2.2 Detection of organic or microbial indicators

Both soil and irrigation water samples should be placed in glass bottles.

4.7 Sealing

The samples are packed according to the sample to be tested and the backup sample, and then sealed on site. Sampling personnel should fill out the sampling list immediately on site.

4.8 Transport

4.8.1 Soil, irrigation water

Samples must be checked for labels and sampling records before shipment, sorted and packed, and sent to the laboratory on time. The receiver and the sender checked After that, sign on the sample registration form to confirm.

4.8.2 Air

According to the provisions of 4.6 in NY/T 397.

Appendix A

(Informative appendix)

Table A.1 Sampling sheet (style) of soil for economic forest origin

Numbering.

Task source.

Sampling location. city (state) county (district, city) township (town) village Plot area. planting varieties.

latitude Longitude.

Aspect. Slope.

Altitude. Sampling height/depth.

This sample is.

Test items.

Testing standards.

other.

Organization name contact Address Postcode Contact Phone Fax Organization name contact Address Postcode Contact Phone Fax the inspected unit should object to the contents and the validity of the sample Explanation is given in this column.

Inspection Unit/Subject (Signature) year month day Sampler description.

Sampler (Signature).

(Special stamp for sampling) year month day Note Note. 1. This single type has 3 copies. The sampling unit of the first unit is retained, the inspection unit of the second unit is retained, and the implementing unit of the third unit is retained.

2. The item selected in this list is indicated by "sqrt", and the content of the column is indicated by "".

3. The inspected unit shall confirm the contents filled in.

Table A.2 Sampling sheet (style) of irrigation water from economic forest origin

Numbering.

Task source.

Plot area.

Sampling location. city (state) county (district, city) township (town) village Sampling position.

Water body name. Section location.

Altitude. Sampling time.

Color. Odor.

Test items.

Testing standards.

other.

Organization name contact Address Postcode Contact Phone Fax Organization name contact Address Postcode Contact Phone Fax the inspected unit should object to the contents and the validity of the sample Explanation is given in this column.

Inspection Unit/Subject (Signature) year month day Sampler description.

Sampler (Signature).

(Special stamp for sampling) year month day Note Note. 1. This single type has 3 copies. The sampling unit of the first unit is retained, the inspection unit of the second unit is retained, and the implementing unit of the third unit is retained.

2. The item selected in this list is indicated by "sqrt", and the content of the column is indicated by "".

3. The inspected unit shall confirm the contents filled in.

Table A.3 Air sampling sheet (style) of economic forest origin

B number. C

Numbering.

Task source.

Plot area.

Sampling location. city (state) county (district, city) township (town) village Elevation. Aspect.

Sampling start time. interval time. min Sampling volume. L membrane number.

Sampling flow. L/min Standard volume. L Air temperature. °C Air pressure.

Test items.

Testing standards.

other.

Organization name contact Address Postcode Contact Phone Fax Organization name contact Address Postcode Contact Phone Fax the inspected unit should object to the contents and the validity of the sample Explanation is given in this column.

Inspection Unit/Subject (Signature) year month day Sampler description.

Sampler (Signature).

(Special stamp for sampling) year month day Note Note. 1. This single type has 3 copies. The sampling unit of the first unit is retained, the inspection unit of the second unit is retained, and the implementing unit of the third unit is retained.

2. The item selected in this list is indicated by "sqrt", and the content of the column is indicated by "".

3. The inspected unit shall confirm the contents filled in.

Appendix B

(Informative appendix)

Table B.1 Sampling seals (styles) for economic forest origin

Numbering.

Sampling of economic forest origin Seal spline Sample name. Sample number.

Sampler (Signature). Unit to be checked (individual).

Sampling unit (seal) Year, month, day, day, day, day, day, day, date