Dissolved Metal and Metalloid Concentrations for Pennypack Creek, Philadelphia, PA, USA

This resource includes stream chemistry for Pennypack Creek, Philadelphia and Montgomery Counties, Pennsylvania. This data set is part of the Urban Critical Zone Cluster in the NSF Critical Zone Collaborative Network. Stream grab samples are analyzed on an ICPMS for 38 dissolved metals and metalloids. Biweekly stream sampling sites are co-located with USGS stream gaging stations 01467048 (PPRH) and 01467042 (PPPI). Synoptic sampling is carried out along the entire main stem (from PPRH upstream) over the span of several hours after a long dry period, approximately twice per year. Data are collected for the purpose of (1) trend analysis as a function of space and time; (2) evaluation of the effects of regional geology, anthropogenic perturbations, and weathering processes on stream chemistry; and (3) comparison with stream chemistry from other sites in the Urban CZ cluster.

本资源包含宾夕法尼亚州费城和蒙哥马利县的Penny Pack Creek的河流化学数据。该数据集属于美国国家科学基金会（NSF）临界带协作网络中的城市临界区集群。河流采样样品采用电感耦合等离子体质谱法（ICPMS）对38种溶解金属和类金属进行检测。每周两次的河流采样点与USGS河流测量站01467048（PPRH）和01467042（PPPI）共定位。在长期的干旱期之后，每隔数小时对整个主河道（从PPRH上游开始）进行同步采样，每年大约进行两次。数据的收集旨在（1）分析空间和时间的变化趋势；（2）评估区域地质、人为干扰和风化过程对河流化学的影响；（3）与城市临界区集群内其他地点的河流化学进行比较。