This standard specifies the requirements for the selection of pollution-free jasmine tea 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 jasmine tea production areas. NY 5123-2002 Environmental conditions for pollution-free jasmine tea production areas NY5123-2002 Standard download decompression password: www.bzxz.net

ICS 13. 020. 50
Agricultural Industry Standard of the People's Republic of China
NY 5123--2002
Pollution-free food
Environmental conditions of jasmine for tea production
2002-07-25 Issued
2002-09-01 Implementation
Issued by the Ministry of Agriculture of the People's Republic of China
NY5123-2002Www.bzxZ.net
This standard is proposed by the Ministry of Agriculture of the People's Republic of China. Former
The drafting units of this standard are: Agricultural Product Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture (Hangzhou), Zhejiang Provincial Agricultural Product Quality Supervision, Inspection and Testing Center, and Tea Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture. The main drafters of this standard are: Wang Qiang, Li Zhen, Wang Xiaoli, Zhao Yanshen, Hua Chuyan, Wang Jianqing, Wang, Zhu Youwei, and Lu Chengyin. 372
Environmental conditions of the production area of ​​jasmine flowers for jiaocha
Pollution-free food
NY5123—2002
This standard specifies the requirements for the selection of production areas, ambient air quality requirements, irrigation water quality requirements, soil environmental quality requirements, test methods and sampling methods for pollution-free jasmine flowers for ruicha. This standard applies to the production areas of pollution-free jasmine flowers for ruicha. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions shall apply to this standard. GB/T6920 Water quality Determination of pH value Glass electrode method GB/T 7467
Water quality Determination of hexavalent chromium Diphenylcarbohydrazide spectrophotometric method Determination of total mercury Cold atomic absorption spectrophotometric method Water quality,
GB/T 7468
GB/T 7475
Determination of copper, zinc, lead and cadmium Atomic absorption spectrophotometric method Water quality
GB/T 7485
GB/T 7487
Determination of total arsenic Silver diethyldithiocarbamate spectrophotometric method Determination of cyanide Part II: Determination of cyanide Water quality
GB/T15262
GB/T 15432
GB/T15434
Ambient airDetermination of sulfur dioxideFormaldehyde absorption-pararosaniline spectrophotometric methodAmbient air
Ambient air
Ambient air
GB/T 15435
GB/T 17134
Soil quality
GB/T 17136
GB/T 17141
NY/T 395
Determination of total suspended particulate matterGravimetric method
Determination of fluorideFilter membrane·fluoride ion selective electrode methodDetermination of nitrogen dioxideSaltzman Method
Determination of total arsenicSilver diethyldithiocarbamate spectrophotometryDetermination of total mercury in soil qualityCold atomic absorption spectrophotometryDetermination of lead and cadmium in soil qualityGraphite furnace atomic absorption spectrophotometryTechnical specification for monitoring environmental quality of farmland soil NY/T 396
Technical specification for monitoring environmental quality of agricultural water sourcesNY/T 397
3 Requirements
3.1 Requirements for origin
Technical specification for monitoring ambient air quality in agricultural areasThe origin of jasmine for pollution-free cellar tea 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 of origin
The ambient air quality of the origin of jasmine for pollution-free luxury tea should meet the requirements of Table 1. 373
NY 5123-—2002
Total suspended particulate matter (standard state)/(mg/m2) Sulfur dioxide (standard state)/(mg/m2) Nitrogen oxide (standard state)/(mg/m)
Fluoride (standard state)/(μg/m2) Table 1:
Ambient air quality requirements
Daily average
Note: Daily average refers to the average concentration of any day; 1h average refers to the average concentration of any hour. 3.3 Quality of irrigation water in the production area
Irrigation water in the production area of ​​jasmine for pollution-free cellar tea should meet the requirements of Table 2. Table 2 Requirements for irrigation water quality
Total cadmium/(mg/I)
Total mercury/(mg/L)
Total arsenic/(mg/L)
Total lead/(mg/L)
Chromium (hexavalent)/(mg/1)
Cyanide (in CN\)/(mg/L)
3.4 ​​Soil environment quality of production area
Jasmine tea produced for pollution-free cellar tea The soil environmental quality shall 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)
Concentration limit
Concentration limit
Content limit
1h average
pH6.5~7. 5
Note: The content limits listed in this table are applicable to soil fill with cation exchange ≥5cmol/kg. If ≤5cmol/kg, the content limit is half of the value in the table. 4 Test method
4.1 Ambient air quality
Determination of total suspended particulate matter: Perform in accordance with the provisions of GB/T15432. 4.1.1
Determination of sulfur dioxide: in accordance with the provisions of GB/T15262. 4.1.2
4.1.3 Determination of nitrogen dioxide: in accordance with the provisions of GB/T15435. 4.1.4 Determination of fluoride: in accordance with the provisions of GB/T15434. 4.2 Irrigation water quality
4.2.1 Determination of pH value: in accordance with the provisions of GB/T6920. 4.2.2 Determination of total mercury: in accordance with the provisions of GB/T7468. 374
4.2.3 Determination of lead and cadmium: in accordance with the provisions of GB/T7475. 4.2.4 Total determination: in accordance with the provisions of GB/T7485. 4.2.5 Determination of hexavalent chromium: in accordance with the provisions of GB/T7467. 4.2.6 Determination of cyanide: in accordance with the provisions of GB/T7487. 4.3 Soil environmental quality
4.3.1 Determination of pH value: in accordance with the provisions of NY/T395. Determination of total arsenic: in accordance with the provisions of GB/T17134. 4.3.2
4.3.3 Determination of total mercury: in accordance with the provisions of GB/T17136. 4.3.4 Determination of lead and: in accordance with the provisions of GB/T17141. 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. NY5123--2002
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