Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Che, Hong; Jing, Zhang; Qian, Liu; Huijun, He; Zhi-Qi, Zhao (2021): Rare earth elements, suspenden particulate matter,dissolved organic carbon, Neodymium/Ytterbium ratio and Neodymium isotopes data along the salinity gradient in the Changjiang estuary [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.939705

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2021-12-20 • DOI registered: 2022-07-07

RIS CitationBibTeX Citation ShareShow MapGoogle Earth

Abstract:
Surface seawater samples from the Changjiang Estuary were collected during the high discharge season in August 2015. The sampling locations focused on the Changjiang River Estuary area from ~32ºN to ~29ºN . Soon after their recovery, all of the samples were filtered through a 0.40-μm Whatman membrane onboard the vessel. The samples were then acidified to a pH of ~2 with high-purity HCl . From each sample, 15-20 L was placed in acid-cleaned bottles for Nd isotope composition analysis, and 500 mL was collected to determine the REE concentration. The filter membranes were cryopreserved for the determination of SPM. REE concentrations and Nd isotope compositions determined in these filtered waters were treated as dissolved-phase measurements (Nd<0.45μm). An unfiltered water sample was directly acidified to a pH <2 with hydrochloric acid after sample collection and then filtered through a 0.40-μm Whatman membrane in a cleanroom to determine the acid-soluble REEs (Nd>0.45μm)
The data on dissolved REE concentrations were measured by ICP-MS (Thermo iCAP-Q) with a precision of better than 4% and a reagent blank of less than 2%, based on the results of replicated measurements. Nd isotope measurements were made on Nu plasma I and II instruments at the Key Laboratory of Environmental Geochemistry. Corrections were made for instrumental mass bias using a value of ¹⁴³Nd/¹⁴⁴Nd = 0.7219. The ¹⁴³Nd/¹⁴⁴Nd ratios of the samples were normalized using the accepted value from the literature of 0.512115±0.000006 (Tanaka et al., 2000) for JNdi-1 (Geological Survey of Japan). Blank values were ≤700 pg (representing an average of 2% of the sampled signal). The Nd isotopic compositions can be expressed by ε~Nd~ = ¹⁴³Nd/¹⁴⁴Nd[measured] / ¹⁴³Nd/¹⁴⁴Nd[CHUR]-1)×10000, where CHUR stands for the Chondritic Uniform Reservoir, with a value is 0.512638 (Wasserburg et al., 1981), and ¹⁴³Nd/¹⁴⁴Nd[measured] represents the measured value.
Keyword(s):
Changjiang River; Nd balance; Nd isotope; particulate release
Coverage:
Median Latitude: 31.019990 * Median Longitude: 122.934888 * South-bound Latitude: 29.205670 * West-bound Longitude: 117.616670 * North-bound Latitude: 32.723830 * East-bound Longitude: 128.816500
Date/Time Start: 2015-07-20T00:00:00 * Date/Time End: 2017-04-23T00:00:00
Minimum DEPTH, water: 0.25 m * Maximum DEPTH, water: 4.00 m
Event(s):
DT  * Latitude: 30.766670 * Longitude: 117.616670 * Date/Time: 2017-04-23T00:00:00 * Location: Datong, China
EH-13-8_7 (8)  * Latitude: 31.525330 * Longitude: 122.515000 * Date/Time: 2015-08-18T00:00:00 * Elevation: -26.0 m * Location: East China Sea * Campaign: EH-13-8 * Basis: Zhedaiyuyun
EH-13-8_8 (9)  * Latitude: 31.801500 * Longitude: 123.000500 * Date/Time: 2015-08-18T00:00:00 * Elevation: -37.0 m * Location: East China Sea * Campaign: EH-13-8 * Basis: Zhedaiyuyun
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventChe, Hong
2 Latitude of eventLatitudeChe, Hong
3 Longitude of eventLongitudeChe, Hong
4 Date/Time of eventDate/TimeChe, Hong
5 Elevation of eventElevationmChe, Hong
6 Depth, top/minDepth topmChe, Hong
7 Depth, bottom/maxDepth botmChe, Hong
8 DEPTH, waterDepth watermChe, HongGeocode
9 SalinitySalChe, Hong
10 Neodymium, dissolvedNd disspmol/kgChe, HongInductively Coupled Plasma Mass Spectrometry (Thermo iCap Q ICP-MS)<0.45 µm
11 Neodymium, dissolvedNd disspmol/kgChe, HongInductively Coupled Plasma Mass Spectrometry (Thermo iCap Q ICP-MS)>0.45 µm
12 Samarium, dissolvedSm disspmol/kgChe, HongInductively Coupled Plasma Mass Spectrometry (Thermo iCap Q ICP-MS)
13 Ytterbium, dissolvedYb disspmol/kgChe, HongInductively Coupled Plasma Mass Spectrometry (Thermo iCap Q ICP-MS)
14 Neodymium/Ytterbium ratioNd/YbChe, HongInductively Coupled Plasma Mass Spectrometry (Thermo iCap Q ICP-MS)
15 Carbon, organic, dissolvedDOCmg/lChe, Hong
16 Suspended particulate matterSPMmg/lChe, Hong
17 Neodymium-143/Neodymium-144 ratio143Nd/144NdChe, HongMulti-collector ICP-MS (MC-ICP-MS), Nu Plasma I and II
18 Neodymium-143/Neodymium-144 ratio, error143Nd/144Nd e±Che, HongMulti-collector ICP-MS (MC-ICP-MS), Nu Plasma I and II
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
271 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Latitude		3 
Longitude		4 
Date/Time		5 
Elevation [m]		6 
Depth top [m]		7 
Depth bot [m]		8 
Depth water [m]		9 
Sal		10 
Nd diss [pmol/kg]
(<0.45 µm, Inductively Coupled...)		11 
Nd diss [pmol/kg]
(>0.45 µm, Inductively Coupled...)		12 
Sm diss [pmol/kg]
(Inductively Coupled Plasma Ma...)		13 
Yb diss [pmol/kg]
(Inductively Coupled Plasma Ma...)		14 
Nd/Yb
(Inductively Coupled Plasma Ma...)		15 
DOC [mg/l]		16 
SPM [mg/l]		17 
143Nd/144Nd
(Multi-collector ICP-MS (MC-IC...)		18 
143Nd/144Nd e [±]
(Multi-collector ICP-MS (MC-IC...)
DT 30.7667117.61672017-04-2300.50.250.0047.49.710.40.3-11.90.3
EH-13-8_10 31.3988121.57352015-07-21-143.000.1044.39.810.10.3
EH-13-8_a 31.2080121.89952015-08-2300.50.250.2030.06.79.80.23.1130
EH-13-8_b 31.1975121.92372015-08-2300.50.250.3035.27.59.30.33.1112
EH-13-8_DH16 31.7480121.11672015-07-20-153.000.30295.7224762.823.30.9
EH-13-8_c 31.1880121.95432015-08-2300.50.250.80103.921.814.50.53.168
EH-13-8_d 31.1745121.96872015-08-2300.50.251.0030.26.910.50.23.2129
EH-13-8_e 31.1660121.99722015-08-2300.50.251.5034.77.811.10.23.152
EH-13-8_f 31.1370121.59802015-08-2300.50.251.7031.77.510.50.23.1115
EH-13-8_g 31.1180122.12172015-08-2300.50.252.0034.87.710.40.22.879
EH-13-8_h 31.1130122.14032015-08-2300.50.252.5033.27.610.00.23.228
EH-13-8_i 31.1090122.15072015-08-2300.50.252.8036.38.610.90.23.023
EH-13-8_j 31.1050122.16032015-08-2300.50.253.4032.67.810.80.23.025
EH-13-8_k 31.1000122.17782015-08-2300.50.255.2037.99.011.80.23.020
EH-13-8_l 31.0900122.18972015-08-2300.50.256.2050.010.812.40.32.828
EH-13-8_m 31.0890122.20682015-08-2300.50.257.3037.79.011.90.22.722
EH-13-8_n 31.0750122.23782015-08-2300.50.257.7036.18.111.30.22.619
EH-13-8_o 31.0680122.29532015-08-2300.50.258.9031.57.010.00.22.621
EH-13-8_11 31.0902122.30432015-08-22-103.009.9039.78.612.00.3
EH-13-8_p 31.0900122.30422015-08-2200.50.2510.2038.29.012.00.32.516
EH-13-8_q 31.0687122.31532015-08-2200.50.2518.0062.714.613.00.31.211
EH-13-8_r 31.0468122.36652015-08-2200.50.2518.8054.612.511.30.31.110
EH-13-8_s 31.0457122.39182015-08-2200.50.2519.5067.415.013.30.41.15
EH-13-8_12 30.9980122.55102015-08-19-143.0020.6040.68.013.10.2
EH-13-8_t 31.0015122.57822015-08-1900.50.2521.9069.416.414.80.30.95
EH-13-8_u 31.0057122.63522015-08-1900.50.2523.4063.814.714.70.31.04
EH-13-8_v 31.0077122.69722015-08-1900.50.2524.3063.013.613.90.31.03
EH-13-8_13 31.0097122.71172015-08-19-223.0025.4072.514.113.40.4
EH-13-8_w 31.0157122.85722015-08-1900.50.2527.2054.310.911.70.31.13
EH-13-8_7 31.5253122.51502015-08-18-263.0027.40
EH-13-8_8 31.8015123.00052015-08-18-373.0028.30
EH-13-8_9 31.9962123.99382015-08-18-393.0029.90
EH-13-8_x 31.0165122.92582015-08-1900.50.2528.2060.612.310.90.40.53
EH-13-8_14 31.0177122.99322015-08-19-493.0031.6060.211.311.80.4
EH-13-8_15 31.0132123.50872015-08-19-443.0030.20
EH-13-8_16 31.0142123.99382015-08-19-373.0030.20
EH-13-8_17 30.0153122.51472015-08-20-213.0026.00
EH-13-8_18 30.0127123.00172015-08-20-483.0031.20
EH-13-8_19 29.2128122.20982015-08-20-133.0029.00
EH-13-8_20 29.2057122.99082015-08-21-623.0033.40
NM-441_23 31.7478127.51252016-07-20-1324.0030.37
NM-441_24 31.7502128.81652016-07-20-7954.0033.46
NM-441_25 30.2283126.95182016-07-21-1014.0029.68
NM-441_26 29.6835127.77522016-07-21-6654.0032.28
KH-15-3_21 32.7238124.83302015-10-19-684.0031.35
KH-15-3_22 30.7238126.42682015-10-20-844.0031.71