This standard specifies the requirements for the selection of pollution-free pear production areas, environmental air quality requirements, irrigation water quality requirements, soil environmental quality requirements, test methods and sampling methods. This standard applies to pollution-free pear production areas. NY 5101-2002 Environmental conditions for pollution-free food pear production areas NY5101-2002 standard download decompression password: www.bzxz.net

ICS13.020.50
Agricultural Industry Standard of the People's Republic of China
NY 5101—2002
Pollution-free food
Issued on 2002-07-25
Environmental conditions of pear production areas
Implemented on 2002-09-01
Issued by the Ministry of Agriculture of the People's Republic of China
This standard is proposed by the Ministry of Agriculture of the People's Republic of China. Foreword
NY 5101—2002
Drafting units of this standard: Environmental Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture (Tianjin), Agricultural Environmental Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture (Shenyang).
Main drafters of this standard: Huang Shizhong, Xu Yingming, Huang Yongchun, Wang Jijun, Zhang Keqiang. 1 Scope
Environmental conditions of pear production areas
Pollution-free food
NY5101—2002
This standard specifies the selection requirements of pollution-free pear production areas, environmental air quality requirements, irrigation water quality requirements, soil environmental quality requirements, test methods and sampling methods.
This standard applies to pollution-free pear production areas.
2 Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest versions are applicable to this standard. GB/T6920
GB/T7468
GB/T7475
GB/T7485
GB/T15262
GB/T15432
GB/T15434
GB/T17134
GB/T17136
GB/T17137
GB/T17138
GB/T17141
NY/T395
NY/T396
NY/T397
3 Requirements
3.1 Selection of origin
Water qualityDetermination of pH valueGlass electrode method
Determination of total mercuryCold atomic absorption spectrophotometryWater quality
Determination of copper, zinc, lead, cadmium, atomic absorption spectrophotometryWater quality
Determination of total arsenicSilver diethyldithiocarbamate Spectrophotometric methodDetermination of sulfur dioxideFormaldehyde absorption-pararosaniline spectrophotometryAmbient air
Ambient air
Ambient air
Soil quality
Soil qualitybzxz.net
Soil quality
Soil quality
Soil quality
Determination of total suspended particulate matterGravimetric method
Determination of fluorideFilter membrane·fluoride ion selective electrode methodDetermination of total arsenicSilver diethyldithiocarbamate spectrophotometryDetermination of total mercuryCold atomic absorption spectrophotometryDetermination of total chromiumFlame atomic absorption spectrophotometryDetermination of copper and zincFlame atomic absorption spectrophotometryDetermination of lead and cadmium
Graphite furnace atomic absorption spectrophotometry
Technical specifications for monitoring environmental quality of farmland soilTechnical specifications for monitoring environmental quality of agricultural water sourcesTechnical specifications for monitoring ambient air quality in agricultural areasThe production area of ​​pollution-free pears should be selected in agricultural production areas with good ecological conditions, far away from pollution sources and with sustainable production capacity. 3.2 Ambient air quality in the production area
The ambient air quality in the production area of ​​pollution-free pears shall comply with the provisions of Table 1. 1
NY5101—2002
Total suspended particulate matter (standard state)/(mg/m3)Sulfur dioxide (standard state)/(mg/m2)Fluoride (standard state)/(μg/m2)
Table 1 Ambient air quality requirements
Daily average
Note: Daily average refers to the average concentration on any day; 1h average refers to the average concentration in any hour. 3.3 Irrigation water quality in the production area
The irrigation water quality in the pollution-free pear production area should comply with the provisions of Table 2. Table 2 Irrigation water quality requirements
Total mercury/(mg/L）
Total cadmium/(mg/L）
Total arsenic/(mg/L)
Total lead/(mg/L)
3.4 ​​Soil environment quality in the production area
The soil environment quality in the pollution-free pear production area should comply with the provisions of Table 3. Table 3 Soil environmental quality requirements
Total cadmium/(mg/kg)
Total mercury/(mg/kg)
Total arsenic/(mg/kg)
Total lead/(mg/kg)
Total chromium/(mg/kg)
Total copper/(mg/kg)
Concentration limit
1h average
Concentration limit
Content limit
pH6.5~7.5
Note: The content limits listed in this table are applicable to soils with cation exchange capacity>5cmol/kg. If it is <5cmol/kg, the content limit is half of the value in the table.
4 Test methods
4.1 Ambient air quality indicators
4.1.1 Determination of total suspended particulate matter: in accordance with the provisions of GB/T15432. 4.1.2
, Determination of sulfur dioxide: in accordance with the provisions of GB/T15262. 4.1.3 Determination of fluoride: in accordance with the provisions of GB/T15434. 4.2 Irrigation water quality indicators
4.2.1 Determination of pH: in accordance with the provisions of GB/T6920. 4.2.2 Determination of total mercury: in accordance with the provisions of GB/T7468. 4.2.3
Determination of total arsenic: in accordance with the provisions of GB/T7485. 4.2.4 Determination of lead and cadmium: in accordance with the provisions of GB/T7475. 4.3 Soil environment quality indicators
4.3.1 Determination of total mercury: in accordance with the provisions of GB/T17136. 4.3.2
Determination of total arsenic: in accordance with the provisions of GB/T17134. 4.3.3 Determination of lead and cadmium: in accordance with the provisions of GB/T17141. 4.3.4 Determination of total chromium: in accordance with the provisions of GB/T17137. 4.3.5
Determination of copper: in accordance with the provisions of GB/T17138. 5 Sampling methods
5.1 The sampling method for ambient air quality monitoring shall be in accordance with the provisions of NY/T397. 5.2 The sampling method for irrigation water quality monitoring shall be in accordance with the provisions of NY/T396. 5.3 The sampling method for soil environmental quality monitoring shall be in accordance with the provisions of NY/T395. NY5101—2002
NY5101-2002
Agriculture of the People's Republic of China
Industry Standard
Environmental Conditions of Pollution-free Food Pear Production Area
NY5101—2002
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