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真知灼见,MALDI-TOF攻克纺织品掺假难题
仪器信息网· 2025-07-03 06:32
Core Viewpoint - The article discusses the advancements in animal hair identification in textiles using the MALDI-TOF mass spectrometry technology developed by Bruker, which addresses the challenges posed by traditional methods and enhances accuracy and reliability in detecting animal hair sources in textile products [1][2][12]. Group 1: Identification Challenges - Traditional methods for identifying animal hair in textiles, such as optical microscopy, are limited, especially when the samples undergo processing like bleaching or dyeing, which can damage DNA [1][2]. - Certain animal fibers, such as cashmere, sheep wool, and yak wool, have overlapping morphological characteristics, making it difficult to establish objective standards for identification [1]. Group 2: MALDI-TOF Technology Implementation - The Shanghai Customs Industrial Products and Raw Materials Testing Technology Center has established a national standard (GB/T 42699.2-2023) for the qualitative and quantitative analysis of animal hair fibers in textiles using MALDI-TOF-MS, which will be implemented in March 2024 [2]. - The MALDI-TOF-MS method allows for both accurate identification of animal hair sources and quantification of adulterated samples, demonstrating good reproducibility [2][11]. Group 3: Methodology and Results - The process involves extracting proteins from animal hair using SDS/DTT/phosphate buffer, purifying them through SDS-PAGE, and analyzing the resulting peptides with MALDI-TOF-MS to identify species based on characteristic peptide segments [3][4]. - Characteristic peptide segments for different animal species are concentrated in the mass-to-charge ratio range of 2450 m/z to 2750 m/z, allowing for precise identification [4][6]. Group 4: Performance and Reliability - The MALDI-TOF-MS method has shown excellent robustness with a relative standard deviation (RSD) of less than 5% over three years of testing different sample concentrations, ensuring data accuracy and reliability [11]. - The technology is not only applicable to textile analysis but can also be utilized in other fields, such as food adulteration detection [12].
预算1.43亿元!海关系统大批仪器试剂耗材采购意向
仪器信息网· 2025-07-03 06:32
Core Viewpoint - The customs system has announced procurement intentions for laboratory reagents and consumables, totaling a budget of 143 million yuan, with 18 items planned for procurement between June and October 2025 [1][2]. Procurement Overview - The procurement includes various laboratory instruments such as gas chromatography-triple quadrupole mass spectrometers, gas chromatography-mass spectrometers, inductively coupled plasma mass spectrometers, gas chromatographs, and high-performance liquid chromatographs [2][4]. - The total budget for the procurement is 143 million yuan, with specific projects outlined for different customs technical centers [2][4]. Specific Projects - Jiangxi International Travel Health Care Center plans to procure laboratory instruments including high-pressure sterilizers and digital multifunctional X-ray machines, with a budget of 1.28 million yuan [4]. - Urumqi Customs Technical Center aims to procure reagents and consumables worth 4.1 million yuan, including microbiological and molecular biology reagents [4][6]. - The procurement plan for the Nanning Customs Technical Center includes a budget of 8 million yuan per year for reagent consumables from 2025 to 2026 [6][7]. Equipment and Technology Upgrades - The procurement will enhance laboratory detection capabilities, with a focus on modernizing and standardizing laboratory equipment [7][9]. - Specific equipment includes portable chemical hazard detection instruments, A and B level protective clothing, and various monitoring devices for biological and chemical hazards [9][10]. Future Procurement Plans - The customs authority plans to purchase 30 sets of nuclear radiation detection equipment, including 20 portal vehicle radiation detection devices and 10 portal pedestrian radiation detection devices, scheduled for July 2025 [10][11]. - Additional projects include the procurement of various laboratory instruments and reagents to support daily inspection and quarantine work, ensuring compliance with legal requirements for imported and exported goods [10][11].
1.29亿元!中国石油大学(北京)设备更新采购大批仪器
仪器信息网· 2025-07-03 06:32
导读: 近日,中国石油大学(北京)发布多批政府采购意向,仪器信息网特对其中的仪器设备品目进行梳理,统计出40项仪器设备采 购意向,预算总额达1.29亿元。 特别提示 微信机制调整,点击顶部"仪器信息网" → 右上方"…" → 设为 ★ 星标,否则很可能无法看到我们的推送。 近日, 中国石油大学(北京)发布 40 项仪器设备采购意向,预算总额达 1.29亿 元,涉及大地电磁仪、三维颗粒影 像分析系统 、多相流体运聚过程模拟实验仪器 、显微拉曼光谱成像系统 等,预计采购时间为202 5 年 7 ~ 8 月。 中国石油大学(北京) 202 5 年 7~8 月 仪器设备采购 意向汇总表 | 采购 | | 预算 | 采 购 | | --- | --- | --- | --- | | | 需求概况 | | | | 项目 | 万元 | | 时 | | | | | 间 | | | 1.大地电磁仪,1套。 2.实现功能:用于大地电磁测量,用于大地测量 | | | | | 学,地磁与地电,重磁电综合实验,野外地球物理实习考察等课程的 | 202 | | | | 实习实验项目。电磁信号频率10Hz~96kHz,磁场传感器1H在 | ...
2025年上半年流式细胞仪中标盘点:禁令发布的这半年,榜一易主了吗?
仪器信息网· 2025-07-03 06:32
特别提示 微信机制调整,点击顶部"仪器信息网" → 右上方"…" → 设为 ★ 星标,否则很可能无法看到我们的推送。 近年来,流式细胞仪正以瞩目的速度迭代升级:一方面,流式细胞仪分辨率与灵敏度持续提升,细胞信息捕获能力向"高维度、高精度、单细 胞"演进。另一方面,产业格局正经历结构性变革——国产化浪潮加速推进,安捷伦、贝克曼、SONY 等国际品牌纷纷推出本土化机型,国产 厂商亦从中低端市场形成突破。 为透视市场真实生态,仪器信息网对2025年上半年国内流式细胞仪公开中标数据进行了整理分析。 (注:受招标平台公示范围限制,统计存在样本局限性,仅供参考) 进口品牌仍占绝对优势 2025年上半年流式细胞仪中标金额为2.3亿元,中标台套数为208台。本次调研统计到18家流式细胞仪企业,进口厂牌7个,国产厂牌多达11 个。从中标金额来看,进口品牌占比91.89%,国产品牌占比8.11%。 从中标数量来看,进口品牌占比85.29%,进口品牌占比14.71%。单从中标金额和中标数量来看,进口品牌占比仍远高于国产品牌,进口品 牌仍然占市场主导。 导读: 2025年上半年流式细胞仪中标金额为2.3亿元,中标台套数为208台。B ...
岛津、安捷伦等企业中标四川药检院733万元采购项目
仪器信息网· 2025-07-03 06:32
特别提示 微信机制调整,点击顶部"仪器信息网" → 右上方"…" → 设为 ★ 星标,否则很可能无法看到我们的推 送。 采购包2 : | 供应商名称 | 供应商地址 | 中标(成交)金额 | 评审总得分 | | | --- | --- | --- | --- | --- | | 成都运驰实验设备有限公司 | 成都市武侯区人民南路四段9号 | 2,088,000.00元 | 96.90 | | | 采购包3 : | | | | | | 供应商名称 | 供应商地址 | 中标(成交)金 | | 评 审 总 得 | | | | 额 | | 分 | | 成 都 瑞 盛 博 科 技 有 限 | 中国(四川)自由贸易试验区成都市高新区天府大道北段1480号1栋A座4 | | | | | 公司 | 层11号 | 1,750,900.00元 | | 100.00 | | 采购包4 : | | | | | | 供应商名称 | 供应商地址 | 中标(成交)金 | | 评 审 总 得 | | | | 额 | | 分 | | 武汉尚峰供应链科技有限 | 东湖新技术开发区光谷三路777号A塔楼405室405-039(自贸区武汉 | | ...
预算1.69亿元!多个单位采购大批仪器设备
仪器信息网· 2025-07-03 06:32
Core Insights - The article discusses the recent announcement of five government procurement intentions by zycgr, with a total budget of 169 million yuan for various laboratory instruments [1][2]. Procurement Overview - The procurement includes the following instruments: transmission electron microscope, protein stability analyzer, cell culture incubator, cell scanning workstation, high-performance liquid chromatography, and quantitative PCR instrument [2][4]. - The expected procurement timeline is set for June to August 2025 [2]. Detailed Equipment Requirements - The procurement aims to establish an automated antigen screening platform to address new and emerging infectious diseases, requiring various equipment modules for drug efficacy evaluation, immunogenicity assessment, gene synthesis, and plasmid construction [4]. - Specific equipment includes robotic arms, central control software, liquid handling workstations, ultra-low temperature freezers, and high-performance liquid chromatography systems, all needing to integrate automation and provide API protocols [4][5]. Additional Equipment Specifications - A high-precision orbital prediction model training platform is also included, designed to support multi-satellite collaborative orbital simulation tasks [4]. - The procurement also covers an automated catalyst evaluation system and a 12-inch chemical mechanical polishing device for material processing [5]. Summary of Budget Allocation - The total budget for the procurement is 169 million yuan, with specific allocations for each type of equipment, such as 98 million yuan for the transmission electron microscope and 44.07 million yuan for the automated antigen screening platform [2][5].
生态环境部公开征求《水质 溶解氧的测定 荧光淬灭法》等4项国家生态环境标准意见
仪器信息网· 2025-07-02 06:40
导读: 生态环境部发布4项国家生态环境标准征求意见稿,涉及水质、土壤监测方法,公开征求意见至2025年7月28日。 特别提示 微信机制调整,点击顶部"仪器信息网" → 右上方"…" → 设为 ★ 星标,否则很可能无法看到我们的推送。 为贯彻《中华人民共和国环境保护法》,规范生态环境监测工作,我部组织编制了《水质 溶解氧的测定 荧光淬灭法》 等 4 项 国 家 生 态 环 境 标 准 征 求 意 见 稿 , 现 公 开 征 求 意 见 。 标 准 征 求 意 见 稿 及 其 编 制 说 明 , 可 登 录 我 部 网 站 (h tt p ://www.me e . g o v. c n)"意见征集"栏目检索查阅。 各机关团体、企事业单位和个人均可提出意见和建议。请于2 0 2 5年7月2 8日前将意见建议书面反馈我部,并注明联系人 及联系方式,电子文档请同时发送至联系人邮箱。 联系人:生态环境监测司 滕曼 电话:(0 1 0)6 5 6 4 6 2 6 2 7 .《土壤和沉积物 总铜、总铅、总铬、总镉、总镍的测定 石墨炉原子吸收分光光度法(征求意见稿)》编制说明 邮箱:z h i g u a n c h u@m ...
6起科学仪器相关政府采购严重违法失信行为
仪器信息网· 2025-07-02 06:40
Core Viewpoint - The article summarizes serious violations and dishonest behavior records related to government procurement in the scientific instrument sector since 2025, highlighting specific companies and their penalties [1]. Group 1: Company Violations - Hangzhou Zhenxuan Surveying Instrument Co., Ltd. was penalized for colluding with another company during a bidding process, resulting in a fine of 20,028 yuan and a two-year ban from government procurement activities [2][3][4]. - Jiangxi Youyi Industrial Co., Ltd. provided false materials to win a bid, incurring a fine of 6,500 yuan and a one-year prohibition from government procurement [5][6]. - Chongqing Feishier Instrument Co., Ltd. was found to have colluded with other suppliers in a bidding process, leading to a fine of 5,180 yuan and a one-year ban from government procurement [7][8]. - Hunan Yian Scientific Instrument Co., Ltd. refused to sign a government procurement contract after winning a bid, resulting in a fine of 4,500 yuan and a one-year prohibition from government procurement [9][10][11]. - Qingdao Xinjie Medical Equipment Co., Ltd. also refused to sign a contract after winning a bid, facing a fine of 2,500 yuan and a one-year ban from government procurement [13][15]. - Tianjin Kangfu'er Medical Equipment Sales Co., Ltd. was penalized for malicious collusion with other suppliers, incurring a fine of 23,009.1 yuan and a one-year prohibition from government procurement [16][19]. Group 2: Legal Basis and Enforcement - The penalties imposed on the companies are based on Article 77 of the Government Procurement Law of the People's Republic of China, which outlines the consequences for serious violations [4][12][19]. - The enforcement of these penalties is carried out by various local financial departments, such as the Wuyuan County Finance Bureau and the Yichun City Finance Bureau [3][5][7].
蔡司中标!南京航空航天大学1400万三维无损X射线成像系统采购项目
仪器信息网· 2025-07-02 06:40
Core Viewpoint - Nanjing University of Aeronautics and Astronautics has procured a ZEISS 3D non-destructive X-ray imaging analysis system for 13.995 million yuan, aimed at enhancing research capabilities in multiple disciplines including mechanics and aerospace science [1][2]. Group 1: Procurement Details - The procurement project for the 3D non-destructive X-ray imaging analysis system had a budget of 14 million yuan, with Guangzhou Delis Biotechnology Co., Ltd. winning the bid at 13.995 million yuan [2]. - The system model is ZEISS VersaXRM730, and it includes various components such as an X-ray microscope, a closed transmission X-ray source, high-resolution CCD imaging components, and advanced software for 3D scanning and image reconstruction [3]. Group 2: Technical Specifications - The system features a spatial resolution of ≤1μm and can achieve a minimum voxel size of ≤60nm. It operates with a maximum voltage of ≥150 kV and a maximum power of ≥10 W [4]. - The safety design includes a fully enclosed lead-steel shielding room to maximize protection, with internal samples observed through a visible light camera [4]. Group 3: Research Implications - The introduction of this advanced imaging system is expected to significantly enhance the university's research capabilities, potentially leading to breakthroughs in various scientific fields [4].
迈向新污染物监测2.0时代!浙江率先构建全域智能监测体系
仪器信息网· 2025-07-02 06:40
Core Viewpoint - The article discusses the comprehensive upgrade of new pollutant monitoring capabilities by the Zhejiang Provincial Ecological Environment Monitoring Center, marking the transition to a new era of monitoring for new pollutants [1] Group 1: New Pollutant Monitoring Capabilities - The Zhejiang Provincial Ecological Environment Monitoring Center has enhanced its monitoring capabilities for new pollutants, indicating a significant advancement in environmental monitoring technology [1] - This upgrade is part of a broader initiative to address emerging environmental challenges and improve public health and safety [1] Group 2: Implications for Environmental Management - The transition to new pollutant monitoring 2.0 is expected to provide more accurate data, which will aid in better decision-making for environmental management and policy formulation [1] - Enhanced monitoring capabilities will facilitate the identification and control of new pollutants, contributing to improved ecological health in the region [1]