本数据集整合了2020年9月-10月在黄河上游青川甘段干支流18个点位的沉积物检测研究数据。数据主要包括8种重金属元素的含量，6种营养盐的含量。调查人员通过皮特森采泥器采集表层沉积物样品，经低温保存后在实验室内通过专业设备进行相关指标的测定。该数据的发布可为黄河流域沉积物重金属污染的相关研究提供数据支撑。\n
数据集Excel文件共包含2个不同sheets，其中sheet 1为各对应点位表层沉积物中8种重金属元素含量的数据集，共9个字段，详细介绍了各个采样点位的名称、所在流域、所在水体、水体级别、经纬度和各种重金属的含量等信息。sheet 2为各对应点位表层沉积物中6种营养盐的含量数据。", "ds_source": "
本数据集所有样品均为室外采集获得，样品冻干处理后进行各指标的检测，其中
\n1）通过采用原子荧光光度计（BAF-2000）测定消解液中砷 的含量。
\n2）采用原子荧光光度计（BAF-2000）测定消解液中汞的含量
\n3）采用电感耦合等离子体质谱仪(XSERIES 2）测定消解液中镍、铜、锌、镉、铅、铬 的含量
\n4）采用碱熔-钼锑抗分光光度法测定消解液中总磷的含量；用重铬酸钾-硫酸消化法测定总氮的含量；
\n5）采用酸碱滴定法测定总碳和有效磷的含量；采用体积浸提法测定总硫含量；采用重铬酸钾氧化-分光光度法测定有机碳。", "ds_process_way": "
各元素的消解液通过采用不同的分析检测方法测量出其信号强度或吸光度后，在Excel中带入标准曲线得出含量数值。", "ds_quality": "
为了确保分析结果的可靠性,实验所用药剂均为优级纯,参照国家标准土壤样品GBW07408a(GSS-8a),对试验样品使用空白对照,进行全程质量控制。各指标的分析方法、检出限、准确度和精密度均符合有关规范要求。", "ds_acq_start_time": "2020-09-01 00:00:00", "ds_acq_end_time": "2020-10-31 00:00:00", "ds_acq_place": "黄河,白河,黑河,洮河,湟水", "ds_acq_lon_east": 103.99333333333334, "ds_acq_lat_south": 32.80416666666667, "ds_acq_lon_west": 97.69583333333334, "ds_acq_lat_north": 36.84166666666667, "ds_acq_alt_low": 1565.0, "ds_acq_alt_high": 4353.0, "ds_share_type": "apply-access", "ds_total_size": 24844, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "月", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "f0a44957-12f2-494d-a465-3a6aae40e0fc.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "dc4052f6-7bfc-4e5f-b818-fa2cff10e3a0", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.55" ], "quality_level": 3, "publish_time": "2024-04-26 14:39:23", "last_updated": "2024-05-31 14:53:16", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.WATER-ECO.DB6434.2024", "i18n": { "en": { "title": "Dataset of heavy metals and nutrients in surface sediment of the Qingchuan Gan section of the upper reaches of the Yellow River", "ds_format": "", "ds_source": "
All samples in this dataset were collected outdoors and tested for various indicators after freeze-drying.
\n1) The arsenic content in the digestion solution was determined by using an atomic fluorescence spectrophotometer (BAF-2000)
\n2) Using atomic fluorescence spectrophotometer (BAF-2000) to determine the mercury content in the digestion solution
\n3) Using inductively coupled plasma mass spectrometry (XSERIES 2) to determine the content of nickel, copper, zinc, cadmium, lead, and chromium in the digestion solution
\n4) The total phosphorus content in the digestion solution was determined by alkali melting molybdenum antimony impedance spectrophotometry; Determine the total nitrogen content using potassium dichromate sulfuric acid digestion method
\n5) Determine the content of total carbon and available phosphorus using acid-base titration method; Measure the total sulfur content using volume extraction method; Organic carbon was determined by potassium dichromate oxidation spectrophotometry.", "ds_quality": "
In order to ensure the reliability of the analysis results, the agents used in the experiment were all high-grade pure, and the blank control was used for the test samples with reference to the national standard soil samples GBW07408a (GSS-8a), and the whole process of quality control was carried out. The analysis methods, detection limits, accuracy and precision of each index are in line with the requirements of relevant specifications.", "ds_ref_way": "", "ds_abstract": "", "ds_time_res": "月", "ds_acq_place": "Yellow River, White River, Black River, Tao River, Huangshui", "ds_space_res": "", "ds_projection": "", "ds_process_way": "
The signal intensity or absorbance of the digest of each element was measured by different analytical detection methods, and the content value was brought into the standard curve.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "沉积物", "重金属", "营养盐", "含水率", "pH" ], "ds_subject_tags": [ "水文学" ], "ds_class_tags": [], "ds_locus_tags": [ "黄河", "白河", "黑河", "洮河", "湟水" ], "ds_time_tags": [ 2020 ], "ds_contributors": [ { "true_name": "丁厚宽", "email": "2320183009@stu.htu.edu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "赵建南", "email": "zhaojiannan1999@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "魏颖", "email": "weiying1533@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "李聪", "email": "2395433537@qq.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "袁华涛", "email": "htyuan1611@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "张景晓", "email": "zhangjingxiao@htu.edu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "高肖飞", "email": "gaoxiaofei@htu.edu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "董静", "email": "happydj111@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "宋东蓥", "email": "songdongying@126.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "高云霓", "email": "gaoyn@htu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "李学军", "email": "xjli@htu.cn", "work_for": "河南师范大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "丁厚宽", "email": "2320183009@stu.htu.edu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "赵建南", "email": "zhaojiannan1999@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "魏颖", "email": "weiying1533@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "袁华涛", "email": "htyuan1611@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "张景晓", "email": "zhangjingxiao@htu.edu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "高肖飞", "email": "gaoxiaofei@htu.edu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "宋东蓥", "email": "songdongying@126.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "董静", "email": "happydj111@163.com", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "高云霓", "email": "gaoyn@htu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "李学军", "email": "xjli@htu.cn", "work_for": "河南师范大学", "country": "中国" } ], "ds_managers": [ { "true_name": "李学军", "email": "xjli@htu.cn", "work_for": "河南师范大学", "country": "中国" }, { "true_name": "高云霓", "email": "gaoyn@htu.cn", "work_for": "河南师范大学", "country": "中国" } ], "category": "生态" }